Baltimore County, MD — Planting Guide
Baltimore County, Maryland gardeners: here's your June plan
We've pulled the most time-sensitive tasks for Baltimore County, Maryland this June and put them front and centre. Tackle them in order.
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Begin indoor sowing: peppers, astilbe, and begonias
A seed-starting mix and a sunny window (or a grow light) are all you need. Keep soil warm — around 70°F — for fast germination.
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It's harvest week for basil, carrots, and cucumber
The more you pick, the more the plant produces. Letting fruit overripen tells the plant it's time to stop.
Coming up in July — start thinking about
- First harvests: basil, cucumber, and green beans
Baltimore County is in USDA Zone 7b. The average last spring frost is April 3 and the first fall frost is November 6, giving you a growing season of approximately 217 days.
At an elevation of 641 ft, Baltimore County receives approximately 49.1 in of rainfall annually. Summer highs average 93°F with winter lows around 29°F. The predominant soil type is Silt Loam.
Based on 31 years of NOAA climate station data, the last frost date here varies by 26 days year to year — ranging from March 21 in warm years to April 16 in cold years. The growing season is trending longer by about 3.91 days per decade. Baltimore County scores 60/100 (Good) on the Microclimate Index.
🌡️ Zone
7b (5°F to 10°F min)
❄️ Last Frost
April 3
🍂 First Frost
November 6
📅 Growing Season
217 days
⛰️ Elevation
641 ft
🌧️ Annual Rainfall
49.1 in
Monthly Watering Calendar for Baltimore County
When you'll need to water your garden — based on average monthly rainfall vs. the ~1 inch/week most gardens need.
For new gardeners: The 1-inch-per-week rule applies to most vegetable crops. Baltimore County averages 49" a year — divide by 52 and compare to that 1" target. Some months are above, some below; that's where the calendar earns its keep.
View detailed monthly data
| Month | Avg Rainfall | Rainy Days | Extra Water Needed | Watering Effort |
|---|---|---|---|---|
| Jan | 3.9 in | 12 days | — | None |
| Feb | 3.2 in | 10 days | — | None |
| Mar | 3.8 in | 11 days | 0.5 in | Low |
| Apr | 3.7 in | 11 days | 0.6 in | Moderate |
| May | 4.7 in | 12 days | — | Low |
| Jun | 4.9 in | 10 days | — | Low |
| Jul | 5.5 in | 10 days | — | Low |
| Aug | 4.7 in | 9 days | — | Low |
| Sep | 4.2 in | 7 days | 0.1 in | Low |
| Oct | 3.5 in | 9 days | 0.8 in | Moderate |
| Nov | 3.8 in | 10 days | — | None |
| Dec | 3.1 in | 10 days | — | None |
Annual total: 49 in. Water needs vary by crop — tomatoes need ~1.2"/week while herbs like rosemary need only 0.3"/week. Check individual plant pages for crop-specific water budgets that factor in your county's rainfall and soil drainage.
Baltimore County Soil Profile
Soil Type
Silt Loam
Soil pH
5.7-7
Drainage
Well Drained
Frost Risk Probability
Based on 31 years of NOAA weather station data from 3 stations
Beginners: Plant frost-sensitive crops (tomatoes, peppers, squash) after the "Safe" date on the left. Harvest or cover them before the "Protect by" date on the right. Hardy crops (lettuce, peas, kale) can go in the yellow transition zones.
How to read this table: "Conservative" means you're safe from frost 9 out of 10 years — best for beginners and frost-sensitive crops. "Average year" is the typical date. "Aggressive" means only 1 in 10 years is that warm — experienced gardeners with frost protection can try these dates.
| Planting Strategy | Last Spring Frost | First Fall Frost | Frost-Free Days |
|---|---|---|---|
| Conservative (safest) | Apr 16 | Nov 21 | 219 days |
| Cautious | Apr 9 | Nov 11 | 216 days |
| Average year | Apr 3 | Nov 6 | 217 days |
| Optimistic | Mar 28 | Nov 1 | 218 days |
| Aggressive (risky) | Mar 21 | Oct 21 | 214 days |
Not very — frost dates can vary by ±26 days year-to-year. Use the "Conservative" row in the table below, and keep row covers handy for surprise late frosts.
Yes — growing seasons are getting longer here (about 3.9 days per decade). Spring is arriving earlier than it used to. Good news for gardeners.
Gardening Difficulty Score
Baltimore County offers good growing conditions. A little planning around frost dates goes a long way.
Local Gardening Help in Baltimore County
Free expert help is closer than you think. Your county's cooperative extension office connects you with trained gardeners, soil testing labs, and local programs — all specific to Baltimore County's climate and soil.
County Extension Office
Baltimore County University of Maryland Extension Extension Office
Phone: 301-405-2072
Visit Extension Office Website →
Extension offices are run by land-grant universities and funded by the USDA. Their advice is free, research-based, and tailored to your county's specific conditions.
Master Gardener Program
Free gardening help from trained volunteers
Master Gardeners are community volunteers who complete 40–60 hours of university horticultural training. They answer gardening questions, diagnose plant problems, and offer workshops — all free.
Many extension offices run a Master Gardener hotline where you can call or email with photos of plant problems for free diagnosis.
Soil Testing
Available through your extension office
Before amending your soil, get it tested. Your extension office offers soil testing (typically $10–$25) that tells you exact pH, nutrient levels, and amendment recommendations specific to what you want to grow.
Services Available in Baltimore County
Finding local nurseries & garden centers in Baltimore County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Baltimore County's soil and climate that big-box stores can't. Plants from local growers are typically hardier because they're already acclimated to your zone.
How to Find Them
Search for "nurseries near Baltimore County MD" or "garden center Baltimore County" on Google Maps. Also check with your extension office — they often maintain lists of reputable local nurseries and plant sales.
Community gardens & gardening groups
Community gardens are a great way to learn from experienced gardeners in your area, especially if you're limited on space. Search "community garden Baltimore County MD" or check your extension office and local parks department. Facebook groups like "Baltimore County Gardeners" or "Maryland Gardening" are also excellent for local advice and plant swaps.
What to Plant After Your Harvest
After your first crops finish, use the remaining frost-free days to grow a second round.
Show 6 more succession options
Sunlight & Day Length in Baltimore County
Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.
Why this matters: Onions are a great example of why day length matters. They "bulb up" only when daylight hits a specific number of hours — plant the wrong variety (short-day in the north, long-day in the south) and you'll get tiny bulbs no matter how well you grow them. Baltimore County's latitude determines which onion varieties succeed.
Longest Day
14.8 hours
Summer solstice daylight
Shortest Day
9.2 hours
Winter solstice daylight
Peak Sun Hours
8.2 hr/day peak (summer)
Peak sun hours (green dashed line below) account for cloud cover — this is the usable direct sunlight your garden actually receives. Most vegetables need 6+ peak sun hours.
Onion tip: Your long summer days (14+ hours) support long-day onion varieties like Walla Walla, Sweet Spanish, and Ailsa Craig.
View detailed monthly data
| Month | Daylight Hours | Peak Sun Hours | Day Length |
|---|---|---|---|
| January | 9.5 hr | 3.7 hr | Short day |
| February | 10.5 hr | 4.6 hr | Short day |
| March | 11.7 hr | 5.2 hr | Short day |
| April | 13 hr | 6.3 hr | Neutral |
| May | 14.2 hr | 7.2 hr | Long day |
| June | 14.8 hr | 8.2 hr | Long day |
| July | 14.5 hr | 8.1 hr | Long day |
| August | 13.6 hr | 7.5 hr | Neutral |
| September | 12.2 hr | 6.5 hr | Neutral |
| October | 10.9 hr | 5.3 hr | Short day |
| November | 9.8 hr | 3.8 hr | Short day |
| December | 9.2 hr | 3.2 hr | Short day |
Peak sun hours factor in typical cloud cover — use these for solar panel and shade-planning calculations.
Soil Temperature & Composting in Baltimore County
Monthly soil temps tell you when to plant warm-season crops, and when your compost pile is actively working.
The practical takeaway: Most root crops germinate well at 50-60°F. Most fruit-bearing crops want 65-75°F. Baltimore County's monthly soil curve maps these windows to actual months.
Plant Warm Crops When
Soil reaches 60°F+
Soil warm enough from May through Oct.
Best Month to Compost
May
Microbial activity peaks when soil is warm.
Active Composting
8 months
Nearly year-round composting.
View detailed monthly data
| Month | Soil 4" Deep | Soil 8" Deep | Compost Activity | Time to Finish |
|---|---|---|---|---|
| Jan | 39°F | 46°F | ❄️ Dormant | ~36 weeks |
| Feb | 38°F | 44°F | ❄️ Dormant | ~36 weeks |
| Mar | 45°F | 49°F | 🐢 Slow | ~24 weeks |
| Apr | 55°F | 56°F | ♻️ Active | ~14 weeks |
| May | 69°F | 66°F | 🔥 Peak | ~8 weeks |
| Jun | 79°F | 73°F | 🔥 Peak | ~8 weeks |
| Jul | 87°F | 80°F | 🔥 Peak | ~8 weeks |
| Aug | 87°F | 81°F | 🔥 Peak | ~8 weeks |
| Sep | 81°F | 78°F | 🔥 Peak | ~8 weeks |
| Oct | 67°F | 72°F | 🔥 Peak | ~8 weeks |
| Nov | 55°F | 61°F | ♻️ Active | ~14 weeks |
| Dec | 42°F | 50°F | 🐢 Slow | ~24 weeks |
Highlighted rows = soil 60°F+ (safe for warm-season transplants). Compost finishes fastest during peak activity months.
Pest & Disease Pressure in Baltimore County
Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.
Why it matters: Pest pressure scales with warmth and humidity. Hot humid Baltimore County sees year-round bugs and fungal disease; cold dry regions see almost none. A high pest score means crop rotation, resistant varieties, and a weekly pest-watch routine from day one.
Insect Pest Pressure
High — expect multiple pest generations. Preventative measures essential.
Disease Risk
High fungal/bacterial risk. Space plants for airflow, water at soil level.
Seasonal Risk
View 6 common pests in your area
| Pest | Risk Level | Peak Months |
|---|---|---|
| Aphids | Moderate | Mar, Apr, May, Jun, Jul, Aug, Sep, Oct |
| Japanese beetles | Moderate | Jun, Jul, Aug |
| Squash vine borers | Moderate | May, Jun, Jul |
| Stink bugs | High | May, Jun, Jul, Aug, Sep |
| Whiteflies | Low | Jun, Jul, Aug, Sep |
| Spider mites | Moderate | Jul, Aug |
Organic pest management tips
- Install physical barriers: floating row covers, copper tape for slugs, mesh netting
- Apply Bt (Bacillus thuringiensis) for caterpillar control — safe for beneficial insects
- Use kaolin clay spray to deter a wide range of insects on fruiting crops
- Release beneficial insects: ladybugs for aphids, parasitic wasps for caterpillars
- Apply neem oil weekly during high-pressure months
- Mulch heavily (3-4 inches) to reduce soil-borne disease splash
Cover Crops for Baltimore County
Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with planting dates calibrated for your area.
What this means for you: In Baltimore County, cover crops also crowd out weeds. The denser the cover, the less weed pressure next season. Pays for itself in saved weeding time.
Spring Cover Crops (4 options) — Build soil before the main growing season
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Buckwheat | Apr 9 | Sep 11 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Cowpeas (southern peas) | Apr 7 | Aug 28 | ✓ Yes | Excellent nitrogen fixer for warm climates, edible |
| Sorghum-sudan grass | Apr 11 | Aug 28 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | Mar 5 | Sep 11 | ✓ Yes | Living mulch, fixes nitrogen, permanent ground cover |
Summer Cover Crops (1 options) — Fill gaps and suppress weeds between plantings
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Sunflowers | Apr 27 | Oct 23 | — | Deep roots break compaction, attract pollinators and beneficial insects |
Fall Cover Crops (7 options) — Plant after harvest to protect soil over winter
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Austrian winter peas | Aug 30 | Mar 20 | ✓ Yes | Fixes nitrogen, good for heavy clay soils |
| Crimson clover | Aug 28 | Mar 13 | ✓ Yes | Fixes nitrogen, attracts pollinators in spring |
| Daikon radish | Sep 10 | Mar 13 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Aug 13 | Mar 20 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Sep 27 | Mar 20 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Aug 3 | Mar 13 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Aug 1 | Mar 13 | — | Erosion control, weed suppression, good biomass |
Wind & Microclimate in Baltimore County
What this means for you: Wind shapes the garden you don't think about: bee paths, evaporation, structural stress on tomato cages. Baltimore County's 11.7 mph background level is a baseline you should know before placing the tallest crops (sunflowers, pole beans, sweet corn).
Wind dries soil, stresses plants, and affects frost patterns. Understanding your exposure helps with garden placement.
Seasonal Wind Speed
Spring: 16 mph Summer: 12 mph
Fall: 11 mph Winter: 16 mph
Prevailing wind: W. Windy area — plant a windbreak hedge on the W side of your garden.
Windbreak Benefit
6.8/10
Moderately beneficial — a simple fence or trellis can protect delicate crops from wind stress.
Frost Pocket Risk
Low
Relatively flat terrain (267 ft range). Frost pocket risk is minimal — garden placement is flexible.
Rainwater Harvesting in Baltimore County
How much water you can collect, when to collect it, and what size system you need for your garden.
The practical takeaway: Rainwater is unchlorinated, unfluoridated, and at ambient temperature — plants actually prefer it. Baltimore County's 49" annual rainfall means even a small 50-gallon barrel catches enough for a few weeks of garden watering between storms.
Annual Collection
24,421 gal
Per 1,000 sq ft of roof area (at 80% collection efficiency)
Recommended Setup
6 rain barrels (55 gal each)
For a typical 500 sq ft garden. Serious collectors: consider a 500 gal tank.
Legal Status
Unrestricted
Rainwater harvesting is fully legal in your state with no restrictions.
Best Collection Months
May, Jun, Jul, Aug
Highest rainfall months — your barrels will fill up quickly during these months.
Months to Draw From Storage
Feb, Oct, Dec
Dry months when you'll rely on stored water — size your storage for this gap.
Rainwater collection tips for your area
- Your county receives approximately 49.0 inches of rain per year
- A 1,000 sq ft roof can collect roughly 24,421 gallons annually
- Rainwater harvesting is fully legal in your state
- Stock up on stored water before your dry season (Feb, Oct, Dec)
- Use a first-flush diverter to keep roof debris out of your collection
Soil & Growing Conditions in Baltimore County
Soil Type
Silt Loam
Soil pH 5.7–7 · Well Drained drainage
Native soil is well-suited to most vegetables and herbs with regular compost additions.
Watering Needs
Drought stress: 1.5/10
Baltimore County has very low drought pressure. Natural rainfall usually meets garden needs — water only during extended dry spells.
Season Tips
217-day frost-free season
Plenty of time for warm-season crops. Start heat-lovers indoors 6–8 weeks before last frost to maximise your harvest window.
Your Free Printable Garden Planner
Plan every bed, every planting, every harvest — in one place. This 22-page printable includes your zone's planting calendar, a month-by-month task list, a seed inventory tracker, a harvest log, and succession-planting charts. Built to print, write in, and actually use all season.
Recommended for Your Garden
Test your soil pH, nitrogen, phosphorus, and potassium levels before planting.
Get instant, accurate soil pH readings to fine-tune your amendments.
Boost soil fertility and structure with rich, well-aged organic compost.
🥬 Vegetables to Grow in Baltimore County
112 vegetables that grow well in Zone 7b with planting dates for Baltimore County.
Show all 112 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Acorn Squash | Mar 6 | Apr 10 | Apr 17 | — | Jul 10 – Aug 14 | 80–100 |
| Amaranth | Feb 13 | Apr 10 | Apr 17 | — | Jul 17 – Sep 4 | 90–120 |
| Artichoke | — | — | Apr 17 | — | Aug 21 – Oct 30 | 120–180 |
| Arugula | Feb 27 | Mar 20 | Apr 3 | Aug 28 | May 8 – Jul 10 | 30–50 |
| Asparagus | — | — | Apr 17 | — | — | 730–1095 |
| Beets | — | Mar 20 | — | Aug 28 | May 15 – Jun 12 | 50–70 |
| Belgian Endive | Feb 27 | Mar 20 | Apr 3 | Aug 28 | Jul 24 – Sep 18 | 110–150 |
| Bitter Melon | Feb 13 | Apr 10 | Apr 17 | — | Jun 19 – Jul 31 | 60–90 |
| Black Beans | — | Apr 10 | — | — | Jul 10 – Aug 28 | 90–120 |
| Bok Choy | Feb 27 | Mar 20 | Apr 3 | Aug 28 | May 15 – Jun 19 | 40–60 |
| Broccoli | Feb 27 | Mar 20 | Apr 3 | Aug 28 | Jun 5 – Jul 17 | 60–90 |
| Broccoli Rabe | Feb 27 | Mar 20 | Apr 3 | Aug 28 | May 15 – Jun 19 | 40–60 |
| Brussels Sprouts | Feb 27 | Mar 20 | Apr 3 | Aug 28 | Jul 3 – Aug 28 | 90–130 |
| Butternut Squash | Mar 6 | Apr 10 | Apr 17 | — | Jul 17 – Aug 21 | 85–110 |
| Cabbage | Feb 27 | Mar 20 | Apr 3 | Aug 28 | Jun 5 – Jul 31 | 60–100 |
| Calabash | Feb 13 | Apr 10 | Apr 17 | — | Jul 10 – Sep 4 | 80–120 |
| Cardoon | — | — | Apr 17 | — | Aug 21 – Oct 2 | 120–150 |
| Carrots | — | Mar 20 | — | Aug 28 | May 22 – Jun 26 | 60–80 |
| Cauliflower | Feb 27 | Mar 20 | Apr 3 | Aug 28 | May 29 – Jul 31 | 55–100 |
| Celeriac | Feb 27 | Mar 20 | Apr 3 | Aug 28 | Jul 17 – Aug 21 | 100–120 |
| Celery | Feb 27 | Mar 20 | Apr 3 | Aug 28 | Jun 26 – Aug 21 | 80–120 |
| Celtuce | Feb 27 | Mar 20 | Apr 3 | Aug 28 | Jun 5 – Jul 17 | 60–90 |
| Chard | Feb 27 | Mar 20 | Apr 3 | Aug 28 | May 29 – Jul 17 | 50–60 |
| Chayote | Feb 13 | Apr 10 | Apr 17 | — | Aug 21 – Oct 30 | 120–180 |
| Chickpeas | Feb 27 | Mar 20 | Apr 3 | Aug 28 | Jun 26 – Aug 7 | 80–110 |
| Chicory | Feb 27 | Mar 20 | Apr 3 | Aug 28 | Jun 5 – Jul 17 | 60–85 |
| Chinese Cabbage | Feb 27 | Mar 20 | Apr 3 | Aug 28 | May 29 – Jun 26 | 50–70 |
| Christmas Lima Beans | Feb 13 | Apr 10 | Apr 17 | — | Jul 10 – Aug 14 | 80–100 |
| Collard Greens | Feb 27 | Mar 20 | Apr 3 | Aug 28 | May 29 – Jul 31 | 55–75 |
| Corn | — | Apr 10 | — | — | Jun 12 – Aug 7 | 60–100 |
| Cowpeas | — | Apr 10 | — | — | Jun 12 – Jul 24 | 60–90 |
| Cress | Feb 27 | Mar 20 | Apr 3 | Aug 28 | Apr 17 – May 8 | 14–21 |
| Crookneck Squash | Mar 6 | Apr 10 | Apr 17 | — | Jun 5 – Jul 3 | 45–60 |
| Crosne | — | Mar 20 | — | Aug 28 | Aug 21 – Oct 23 | 150–200 |
| Cucumber | Mar 6 | Apr 10 | Apr 17 | — | Jun 12 – Aug 7 | 50–70 |
| Daikon | — | Mar 20 | — | Aug 28 | May 15 – Jun 12 | 50–70 |
| Delicata Squash | Mar 6 | Apr 10 | Apr 17 | — | Jul 10 – Aug 14 | 80–100 |
| Edamame | — | Apr 10 | — | — | Jun 26 – Aug 7 | 75–100 |
| Eggplant | Jan 30 | Apr 10 | Apr 17 | — | Jun 26 – Aug 28 | 65–85 |
| Endive | Feb 27 | Mar 20 | Apr 3 | Aug 28 | May 22 – Jun 26 | 45–65 |
| Escarole | Feb 27 | Mar 20 | Apr 3 | Aug 28 | May 29 – Jun 26 | 50–70 |
| Fava Beans | Feb 27 | Mar 20 | Apr 3 | Aug 28 | Jun 19 – Jul 31 | 75–100 |
| Fennel | Feb 13 | Apr 10 | Apr 17 | — | Jun 19 – Jul 31 | 60–90 |
| Garlic | — | — | — | Sep 25 | Dec 25 – May 7 | 90–240 |
| Green Beans | — | Apr 10 | — | — | Jun 5 – Jul 31 | 50–65 |
| Horseradish | — | — | Apr 17 | — | Aug 21 – Oct 30 | 120–180 |
| Hot Peppers | Jan 30 | Apr 10 | Apr 17 | — | Jun 26 – Oct 2 | 70–120 |
| Hubbard Squash | Mar 6 | Apr 10 | Apr 17 | — | Jul 31 – Sep 4 | 100–120 |
| Jicama | Feb 13 | Apr 10 | Apr 17 | — | Aug 21 – Oct 30 | 120–180 |
| Kabocha | Mar 6 | Apr 10 | Apr 17 | — | Jul 17 – Aug 14 | 85–100 |
| Kai Lan | Feb 27 | Mar 20 | Apr 3 | Aug 28 | May 22 – Jun 19 | 45–60 |
| Kale | Feb 27 | Mar 20 | Apr 3 | Aug 28 | May 29 – Jul 24 | 50–70 |
| Kidney Beans | — | Apr 10 | — | — | Jul 10 – Aug 14 | 85–110 |
| Kohlrabi | Feb 27 | Mar 20 | Apr 3 | Aug 28 | May 22 – Jun 26 | 45–65 |
| Komatsuna | Feb 27 | Mar 20 | Apr 3 | Aug 28 | May 8 – Jun 12 | 35–50 |
| Leeks | Feb 27 | Mar 20 | Apr 3 | Aug 28 | Jul 3 – Sep 18 | 90–150 |
| Lentils | Feb 27 | Mar 20 | Apr 3 | Aug 28 | Jun 26 – Aug 7 | 80–110 |
| Lettuce | Feb 27 | Mar 20 | Apr 3 | Aug 28 | May 8 – Jul 17 | 30–60 |
| Lima Beans | — | Apr 10 | — | — | Jun 12 – Jul 24 | 60–90 |
| Loofah | Feb 13 | Apr 10 | Apr 17 | — | Jul 31 – Oct 2 | 100–150 |
| Luffa | Feb 13 | Apr 10 | Apr 17 | — | Jul 17 – Oct 2 | 90–150 |
| Mache | Feb 27 | Mar 20 | Apr 3 | Aug 28 | May 15 – Jun 19 | 40–60 |
| Malabar Spinach | Feb 13 | Apr 10 | Apr 17 | — | Jun 12 – Jul 10 | 55–70 |
| Melon | Mar 6 | Apr 10 | Apr 17 | — | Jun 26 – Aug 14 | 70–100 |
| Microgreens | Feb 27 | Mar 20 | Apr 3 | Aug 28 | Apr 10 – May 8 | 7–21 |
| Mitsuba | Feb 27 | Mar 20 | Mar 27 | Aug 28 | May 22 – Jul 17 | 50–70 |
| Mizuna | Feb 27 | Mar 20 | Apr 3 | Aug 28 | May 8 – Jun 5 | 30–45 |
| Mustard Greens | Feb 27 | Mar 20 | Apr 3 | Aug 28 | May 8 – Jul 10 | 30–50 |
| Napa Cabbage | Feb 27 | Mar 20 | Apr 3 | Aug 28 | May 29 – Jul 3 | 55–75 |
| New Zealand Spinach | Feb 13 | Apr 10 | Apr 17 | — | Jun 12 – Jul 10 | 55–70 |
| Okra | Feb 13 | Apr 10 | Apr 17 | — | Jun 12 – Aug 7 | 50–65 |
| Onion | Feb 27 | Mar 20 | Apr 3 | Aug 28 | Jul 3 – Aug 21 | 90–120 |
| Pac Choi | Feb 27 | Mar 20 | Apr 3 | Aug 28 | May 15 – Jun 12 | 40–55 |
| Parsnip | — | Mar 20 | — | Aug 28 | Jul 3 – Aug 14 | 100–130 |
| Patty Pan Squash | Mar 6 | Apr 10 | Apr 17 | — | Jun 5 – Jul 3 | 45–60 |
| Peas | Feb 27 | Mar 20 | Apr 3 | Aug 28 | May 29 – Jul 24 | 55–70 |
| Peppers | Jan 30 | Apr 10 | Apr 17 | — | Jun 19 – Aug 28 | 60–90 |
| Pole Beans | Feb 13 | Apr 10 | Apr 17 | — | Jun 12 – Aug 7 | 55–70 |
| Potatoes | Feb 13 | Apr 10 | Apr 17 | — | Jun 26 – Sep 4 | 70–120 |
| Pumpkin | Mar 6 | Apr 10 | Apr 17 | — | Jul 17 – Sep 4 | 85–120 |
| Purslane | Feb 27 | Mar 20 | Apr 3 | Aug 28 | May 15 – Jun 19 | 40–60 |
| Radicchio | Feb 27 | Mar 20 | Apr 3 | Aug 28 | Jun 5 – Jul 10 | 60–80 |
| Radish | — | Mar 20 | — | Aug 28 | Apr 17 – May 8 | 22–35 |
| Rhubarb | — | — | Apr 24 | — | — | 365–730 |
| Romanesco | Feb 27 | Mar 20 | Apr 3 | Aug 28 | Jun 19 – Jul 31 | 75–100 |
| Rutabaga | — | Mar 20 | — | Aug 28 | Jun 12 – Jul 17 | 80–100 |
| Salsify | — | Mar 20 | — | Aug 28 | Jul 3 – Aug 14 | 100–130 |
| Savoy Cabbage | Feb 27 | Mar 20 | Apr 3 | Aug 28 | Jun 12 – Aug 7 | 70–110 |
| Scallions | Feb 27 | Mar 20 | Apr 3 | Aug 28 | May 29 – Jun 26 | 50–70 |
| Scarlet Runner Beans | Feb 13 | Apr 10 | Apr 17 | — | Jun 19 – Jul 24 | 60–80 |
| Shallot | Feb 27 | Mar 20 | Apr 3 | Aug 28 | Jul 3 – Aug 21 | 90–120 |
| Shiso | Feb 13 | Apr 10 | Apr 17 | — | Jun 12 – Aug 7 | 50–70 |
| Snap Peas | Feb 13 | Apr 10 | Apr 17 | — | Jun 12 – Aug 7 | 55–70 |
| Snow Peas | Feb 27 | Mar 20 | Apr 3 | Aug 28 | May 29 – Jul 24 | 50–65 |
| Soybeans | — | Apr 10 | — | — | Jul 3 – Aug 28 | 80–120 |
| Spaghetti Squash | Mar 6 | Apr 10 | Apr 17 | — | Jul 17 – Aug 14 | 85–100 |
| Spinach | Feb 27 | Mar 20 | Apr 3 | Aug 28 | May 8 – Jul 10 | 35–50 |
| Squash (Summer) | Mar 6 | Apr 10 | Apr 17 | — | Jun 5 – Aug 7 | 45–65 |
| Squash (Winter) | Mar 6 | Apr 10 | Apr 17 | — | Jul 10 – Sep 4 | 80–120 |
| Sunchoke | — | — | Apr 17 | — | Aug 7 – Oct 2 | 110–150 |
| Sweet Corn | — | Apr 10 | — | — | Jun 12 – Jul 24 | 60–90 |
| Sweet Potatoes | Feb 13 | Apr 10 | Apr 17 | — | Jul 17 – Sep 4 | 90–120 |
| Tatsoi | Feb 27 | Mar 20 | Apr 3 | Aug 28 | May 8 – Jun 12 | 35–50 |
| Tomatillo | Feb 13 | Apr 10 | Apr 17 | — | Jun 19 – Aug 28 | 60–85 |
| Tomatoes | Feb 13 | Apr 10 | Apr 17 | — | Jun 19 – Aug 28 | 60–85 |
| Turnip | — | Mar 20 | — | Aug 28 | May 1 – Jun 5 | 40–60 |
| Watercress | Feb 27 | Mar 20 | Apr 3 | Aug 28 | May 15 – Jun 19 | 40–60 |
| Watermelon | Mar 6 | Apr 10 | Apr 17 | — | Jun 26 – Aug 14 | 70–100 |
| Wax Beans | — | Apr 10 | — | — | Jun 5 – Jul 31 | 50–65 |
| Winter Melon | Feb 13 | Apr 10 | Apr 17 | — | Jul 17 – Sep 4 | 90–120 |
| Yard Long Beans | Feb 13 | Apr 10 | Apr 17 | — | Jun 12 – Jul 24 | 55–80 |
| Zucchini | Mar 6 | Apr 10 | Apr 17 | — | Jun 5 – Jul 31 | 45–60 |
🍓 Fruits to Grow in Baltimore County
31 fruits that grow well in Zone 7b with planting dates for Baltimore County.
Show all 31 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Alpine Strawberries | — | — | Apr 24 | — | Jul 24 – Nov 6 | 90–180 |
| Aronia | — | — | Apr 24 | — | — | 730–1095 |
| Blackberries | — | — | Apr 24 | — | — | 365–730 |
| Blueberries | — | — | Apr 24 | — | — | 730–1095 |
| Boysenberries | — | — | Apr 24 | — | — | 365–730 |
| Cantaloupe | — | — | Apr 24 | — | Jul 3 – Aug 7 | 70–90 |
| Che Fruit | — | — | Apr 24 | — | — | 1095–1825 |
| Cranberries | — | — | Apr 24 | — | — | 730–1095 |
| Currants | — | — | Apr 24 | — | — | 730–1095 |
| Elderberries | — | — | Apr 24 | — | — | 730–1095 |
| Figs | — | — | Apr 24 | — | — | 730–1825 |
| Goji Berries | — | — | Apr 24 | — | — | 730–1095 |
| Gooseberries | — | — | Apr 24 | — | — | 730–1095 |
| Grapes | — | — | Apr 24 | — | — | 730–1095 |
| Ground Cherry | — | — | Apr 24 | — | Jul 3 – Aug 28 | 65–80 |
| Hardy Kiwi | — | — | Apr 24 | — | — | 1095–1825 |
| Haskaps | — | — | Apr 24 | — | — | 730–1095 |
| Honeydew | — | — | Apr 24 | — | Jul 17 – Aug 28 | 80–110 |
| Jostaberry | — | — | Apr 24 | — | — | 730–1095 |
| Kiwi | — | — | Apr 24 | — | — | 1095–1825 |
| Lingonberries | — | — | Apr 24 | — | — | 730–1095 |
| Loquat | — | — | Apr 24 | — | — | 730–1825 |
| Medlar | — | — | Apr 24 | — | — | 1095–1825 |
| Mulberries | — | — | Apr 24 | — | — | 730–1825 |
| Pawpaw | — | — | Apr 24 | — | — | 1095–2555 |
| Persimmon | — | — | Apr 24 | — | — | 1095–2555 |
| Pomegranate | — | — | Apr 24 | — | — | 730–1095 |
| Quince | — | — | Apr 24 | — | — | 1095–1825 |
| Raspberries | — | — | Apr 24 | — | — | 365–730 |
| Serviceberries | — | — | Apr 24 | — | — | 730–1095 |
| Strawberries | — | — | Apr 24 | — | Jul 24 – Dec 4 | 90–365 |
🌿 Herbs to Grow in Baltimore County
36 herbs that grow well in Zone 7b with planting dates for Baltimore County.
Show all 36 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Angelica | Feb 27 | Mar 20 | Mar 27 | Aug 28 | — | 365–730 |
| Anise | Feb 27 | Mar 20 | Mar 27 | Aug 28 | Jun 26 – Sep 11 | 90–120 |
| Basil | Feb 13 | Apr 10 | Apr 17 | — | Jun 12 – Aug 14 | 50–75 |
| Bee Balm | — | — | Apr 10 | — | Jul 10 – Sep 25 | 90–120 |
| Borage | Feb 27 | Mar 20 | Mar 27 | Aug 28 | May 22 – Jul 10 | 50–60 |
| Caraway | Feb 27 | Mar 20 | Mar 27 | Aug 28 | — | 365–450 |
| Catnip | — | — | Apr 10 | — | Jun 12 – Aug 14 | 60–80 |
| Chamomile | Feb 27 | Mar 20 | Mar 27 | Aug 28 | May 29 – Aug 7 | 60–90 |
| Chervil | Feb 27 | Mar 20 | Mar 27 | Aug 28 | May 8 – Jul 10 | 40–60 |
| Chives | — | — | Apr 10 | — | Jun 12 – Aug 21 | 60–90 |
| Cilantro | Feb 27 | Mar 20 | Mar 27 | Aug 28 | May 8 – Jul 10 | 40–60 |
| Comfrey | — | — | Apr 10 | — | Jun 12 – Aug 21 | 60–90 |
| Cumin | Feb 27 | Mar 20 | Mar 27 | Aug 28 | Jul 10 – Sep 11 | 100–120 |
| Dill | Feb 27 | Mar 20 | Mar 27 | Aug 28 | May 8 – Jul 10 | 40–60 |
| Epazote | Feb 13 | Apr 10 | Apr 17 | — | Jun 5 – Jul 31 | 45–60 |
| Fennel (herb) | Feb 27 | Mar 20 | Mar 27 | Aug 28 | May 29 – Aug 7 | 60–90 |
| Feverfew | — | — | Apr 10 | — | Jul 10 – Sep 25 | 90–120 |
| Garlic Chives | — | — | Apr 10 | — | Jun 12 – Aug 21 | 60–90 |
| Horehound | — | — | Apr 10 | — | Jun 26 – Aug 21 | 75–90 |
| Hyssop | — | — | Apr 10 | — | Jun 19 – Aug 21 | 70–90 |
| Lemon Balm | — | — | Apr 10 | — | Jun 12 – Jul 31 | 60–70 |
| Lemon Thyme | — | — | Apr 10 | — | Jun 19 – Aug 21 | 70–90 |
| Lovage | — | — | Apr 10 | — | Jun 19 – Aug 21 | 70–90 |
| Marjoram | — | — | Apr 10 | — | Jun 12 – Aug 21 | 60–90 |
| Mint | — | — | Apr 10 | — | Jun 12 – Aug 21 | 60–90 |
| Oregano | — | — | Apr 10 | — | Jun 12 – Aug 21 | 60–90 |
| Parsley | Feb 27 | Mar 20 | Mar 27 | Aug 28 | May 29 – Jul 31 | 60–80 |
| Rosemary | — | — | Apr 10 | — | Jul 3 – Nov 20 | 80–180 |
| Rue | — | — | Apr 10 | — | Jun 19 – Aug 21 | 70–90 |
| Sage | — | — | Apr 10 | — | Jun 26 – Aug 21 | 75–90 |
| Savory | — | — | Apr 10 | — | Jun 5 – Jul 31 | 50–70 |
| Sorrel | Feb 27 | Mar 20 | Mar 27 | Aug 28 | May 8 – Jul 10 | 40–60 |
| Tarragon | — | — | Apr 10 | — | Jun 12 – Aug 21 | 60–90 |
| Thai Basil | Feb 13 | Apr 10 | Apr 17 | — | Jun 12 – Aug 14 | 50–75 |
| Thyme | — | — | Apr 10 | — | Jun 19 – Aug 21 | 70–90 |
| Valerian | — | — | Apr 10 | — | Aug 14 – Nov 20 | 120–180 |
🌸 Flowers to Grow in Baltimore County
53 flowers that grow well in Zone 7b with planting dates for Baltimore County.
Show all 53 flowers with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Bloom | Days to Maturity |
|---|---|---|---|---|---|---|
| Ageratum | Feb 20 | Apr 3 | Apr 3 | — | May 29 – Oct 2 | 60–75 |
| Alliums | — | — | — | Oct 2 | Oct 30 – Nov 20 | 28–42 |
| Anemones | — | — | — | Sep 11 | Sep 25 – Oct 23 | 90–120 |
| Astilbe | Jan 30 | — | Apr 10 | — | Jun 19 – Aug 14 | 70–100 |
| Bachelor's Button | Feb 20 | Feb 27 | Apr 3 | Sep 11 | Jun 5 – Sep 11 | 60–90 |
| Begonias | Jan 23 | — | Apr 3 | — | Jun 12 – Oct 16 | 70–90 |
| Black-eyed Susan | Jan 30 | Mar 27 | Apr 10 | — | Jun 19 – Oct 30 | 60–80 |
| Bleeding Hearts | Jan 30 | — | Apr 10 | — | May 29 – Jul 3 | 60–90 |
| Calendula | Feb 20 | Feb 27 | Apr 3 | Sep 11 | May 22 – Sep 18 | 50–70 |
| California Poppy | — | Mar 6 | — | Sep 11 | May 15 – Aug 7 | 60–90 |
| Celosia | Mar 6 | Apr 3 | Apr 3 | — | Jun 5 – Oct 16 | 60–90 |
| Columbine | Feb 6 | Apr 10 | Apr 10 | — | May 29 – Jul 3 | 70–100 |
| Coreopsis | Jan 30 | Apr 3 | Apr 10 | — | Jun 12 – Oct 30 | 60–80 |
| Cosmos | Mar 6 | Mar 27 | Mar 27 | — | Jun 5 – Oct 9 | 60–90 |
| Crocus | — | — | — | Oct 2 | Aug 28 – Sep 18 | 10–20 |
| Daffodils | — | — | — | Oct 2 | Sep 4 – Sep 25 | 20–40 |
| Dahlias | Mar 13 | Apr 10 | Apr 10 | — | Jun 19 – Nov 6 | 70–120 |
| Daylily | Jan 30 | — | Apr 10 | — | Jun 19 – Oct 30 | 60–90 |
| Dianthus | Feb 6 | Feb 27 | Mar 6 | — | Apr 24 – Jul 17 | 60–80 |
| Echinacea (Purple Coneflower) | Jan 30 | Apr 10 | Apr 10 | — | Jun 26 – Oct 30 | 70–90 |
| Foxglove | Feb 6 | Apr 10 | Apr 10 | — | May 29 – Jul 3 | 80–120 |
| Gaillardia (Blanket Flower) | Feb 13 | Apr 3 | Apr 3 | — | Jun 12 – Nov 13 | 70–100 |
| Geraniums | Jan 23 | — | Apr 3 | — | Jun 12 – Oct 16 | 70–100 |
| Gladiolus | — | Apr 3 | Apr 3 | — | Jun 12 – Oct 30 | 70–100 |
| Hostas | Jan 23 | — | Apr 10 | — | Jun 19 – Oct 23 | 60–90 |
| Hyacinths | — | — | — | Oct 2 | Sep 25 – Oct 16 | 14–28 |
| Hydrangeas | Jan 23 | — | Apr 3 | — | Jun 12 – Oct 9 | 90–150 |
| Impatiens | Feb 6 | — | Apr 3 | — | Jun 12 – Oct 16 | 60–75 |
| Irises | — | Division | Apr 10 | — | May 29 – Jul 3 | 60–100 |
| Larkspur | — | Mar 6 | — | Aug 28 | May 15 – Aug 7 | 60–90 |
| Lavender | Jan 30 | — | Apr 10 | — | Jun 19 – Sep 11 | 90–120 |
| Lilies | — | Division | Apr 3 | — | Jun 12 – Oct 2 | 70–120 |
| Lobelia | Jan 30 | — | Mar 6 | — | May 1 – Jul 10 | 70–80 |
| Lupine | Feb 6 | Apr 10 | Apr 10 | — | May 29 – Jul 3 | 75–100 |
| Marigolds | Feb 20 | Apr 3 | Apr 3 | — | May 29 – Sep 18 | 50–70 |
| Nasturtium | Mar 6 | Apr 3 | Apr 3 | — | May 29 – Oct 16 | 55–65 |
| Pansy | Jan 23 | — | Mar 27 | Aug 28 | May 22 – Aug 14 | 70–90 |
| Peonies | — | Division | Apr 10 | — | Jun 5 – Jul 3 | 90–120 |
| Petunia | Feb 6 | — | Apr 3 | — | Jun 12 – Oct 9 | 70–90 |
| Phlox | Jan 30 | Apr 10 | Apr 10 | — | Jun 19 – Sep 11 | 80–110 |
| Portulaca | Mar 6 | Apr 3 | Apr 3 | — | May 22 – Oct 2 | 50–70 |
| Ranunculus | — | — | — | Sep 11 | Oct 2 – Oct 30 | 90–120 |
| Roses | Jan 23 | — | Apr 3 | — | Jun 12 – Oct 23 | 90–180 |
| Salvia | Feb 6 | — | Apr 3 | — | Jun 12 – Oct 16 | 70–90 |
| Sedum (Stonecrop) | Jan 30 | — | Apr 10 | — | Jul 31 – Oct 23 | 60–90 |
| Snapdragon | Jan 23 | Mar 6 | Mar 27 | Sep 11 | Jun 5 – Sep 11 | 70–100 |
| Sunflower | Mar 13 | Apr 3 | Apr 3 | — | Jun 26 – Oct 16 | 70–100 |
| Sweet Alyssum | Feb 20 | Mar 6 | Apr 3 | Sep 25 | May 15 – Aug 21 | 45–60 |
| Sweet Pea | — | — | — | Sep 11 | Nov 20 – Feb 12 | 65–85 |
| Tulips | — | — | — | Oct 2 | Sep 18 – Oct 9 | 15–30 |
| Vinca (Annual) | Jan 23 | — | Apr 3 | — | Jun 12 – Oct 16 | 70–90 |
| Yarrow | Jan 30 | Mar 27 | Apr 10 | — | Jun 12 – Oct 30 | 60–90 |
| Zinnia | Mar 6 | Apr 3 | Apr 3 | — | Jun 12 – Oct 16 | 60–70 |
Monthly Planting Guide for Baltimore County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Baltimore County.
Frequently Asked Questions
What planting zone is Baltimore County, MD?
Baltimore County is in USDA Hardiness Zone 7b. This zone classification determines which perennial plants survive winter and sets the baseline for frost timing across the county.
When is the last frost in Baltimore County, MD?
Based on 31 years of NOAA weather station data, the median last spring frost in Baltimore County falls around April 3. In 8 out of 10 years, last frost lands between March 21 and April 16 — a 26-day window of variability. Use April 16 as your conservative safe-to-plant date for frost-sensitive crops.
When is the first fall frost in Baltimore County, MD?
The median first fall frost in Baltimore County arrives around November 6. In cold years it can arrive as early as October 21; in mild years as late as November 21. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in Baltimore County?
Baltimore County has a frost-free growing season of approximately 217 days. This long season supports multiple succession plantings and warm-season crops that need extended heat, like sweet potatoes and melons. Climate records show the growing season is trending longer by about 3.91 days per decade.
What is the soil like in Baltimore County for gardening?
Baltimore County has predominantly Silt Loam soil with a pH range of 5.7–7 and Well Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.
What is grown commercially in Baltimore County?
Baltimore County has commercial agriculture that includes Poultry, Corn, Soybeans, Hay, Wheat. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.
Is Baltimore County a good location for home gardening?
Baltimore County scores 60/100 (Good) on our Microclimate Index, which combines frost reliability, drought pressure, soil challenge, elevation risk, and long-term climate trend. Conditions here are moderate — most common crops grow well with standard timing and care.
Your Baltimore County Garden Planner — Free
A 22-page printable planner built for Baltimore County (Zone 7b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.
The Gardener's Encyclopedia to Companion Planting
The pairings that make vegetables, herbs, and flowers grow better — and the ones that quietly wreck a bed.
- Proven pairings for 200+ vegetables, herbs, flowers, and fruits
- Full seed-starting + planting schedule with timing and spacing
- Bonus: square-foot gardening guide + printable seasonal planners
Seed Saving & Storage Guide
Most saved seeds go bad before next season. This shows exactly when to pick, how to dry, and where to store seeds from 200 plants so yours don't.
- 200 plants, step-by-step: life cycle, pollination type, isolation
- Exact temperature + humidity ranges that keep seeds viable
- Bonus: searchable Google Sheets tracker + custom GPT assistant
Composting Guide for Homesteaders
Turn kitchen scraps and yard waste into compost that actually feeds the garden — instead of a pile that smells, attracts pests, and never breaks down.
- 14 sections on composting methods, soil science, and troubleshooting
- The 7-step hot-compost system from start to finish
- Bonus tools: troubleshooting chart, safety guide, monitoring log