Harmans, MD — Planting Guide for June
Free PDF, personalized for your town's frost dates & climate. Drop your email — we'll send the link.
June in the garden — Anne Arundel County, Maryland
A quick June briefing for Anne Arundel County, Maryland gardeners — what's urgent, what's next, and what can wait.
-
Begin indoor sowing: peppers, begonias, and eggplant
You're about 18 weeks out from your last frost — the perfect window to get these germinating indoors.
-
It's harvest week for basil, carrots, and cucumber
This is the payoff month. Bring a basket, bring a friend, and get into the beds.
Before July arrives, get these ready
- First harvests: basil, cucumber, and green beans
Harmans sits in a long, humid growing climate (Zone 8a, 214 frost-free days). The good news: an enormous planting window. The catch: heat and humidity bring serious pest and disease pressure — fungal disease on tomatoes, root-knot nematodes, squash vine borers, and a steady parade of insects from spring through fall. Plan two distinct growing seasons (spring and fall), give crops air circulation, and prioritize disease-resistant varieties.
Soils trend Silt Loam — the gold standard for vegetables. Add 2–3" of compost annually to maintain it and you'll outgrow most of your neighbors.
Drought pressure is moderate (14.1 weeks/year on average). Mulching and drip irrigation pay for themselves quickly.
🌡️ USDA Zone
8a (10°F to 15°F min)
❄️ Avg. Last Frost
April 3
🍂 Avg. First Frost
November 3
📅 Growing Season
214 days
🌧️ Climate
Humid 44.6" annual
💨 Wind
Moderate 6.6 mph avg
🥶 Frost Tier
Regular 0% frost-free years
🏜️ Drought
14.1 wk/yr trend stable
📍 ZIP Codes
1 ZIP
Monthly Watering Calendar for Harmans
When you'll need to water your garden — based on average monthly rainfall vs. the ~1 inch/week most gardens need.
Quick context: Mulch reduces watering needs 30-50% by cutting evaporation. Harmans's 45" annual rainfall might be enough for vegetables in some months and not in others — a 2-3" mulch layer evens the swing.
View detailed monthly data
| Month | Avg Rainfall | Rainy Days | Extra Water Needed | Watering Effort |
|---|---|---|---|---|
| Jan | 3.4 in | 9 days | — | None |
| Feb | 2.7 in | 10 days | — | None |
| Mar | 3.3 in | 10 days | 1 in | Moderate |
| Apr | 3.6 in | 9 days | 0.7 in | Moderate |
| May | 3.4 in | 12 days | 0.9 in | Moderate |
| Jun | 3.7 in | 10 days | 0.6 in | Moderate |
| Jul | 4.9 in | 10 days | — | Low |
| Aug | 3.6 in | 10 days | 0.7 in | Moderate |
| Sep | 3.1 in | 8 days | 1.2 in | Moderate |
| Oct | 3.4 in | 8 days | 0.9 in | Moderate |
| Nov | 3 in | 10 days | — | None |
| Dec | 2.9 in | 9 days | — | None |
Annual total: 41 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.
Harmans Soil Profile
Soil Type
Silt Loam
Soil pH
5.7-6.5
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 18 | Nov 19 | 215 days |
| Cautious | Apr 10 | Nov 9 | 213 days |
| Average year | Apr 3 | Nov 3 | 214 days |
| Optimistic | Mar 29 | Oct 30 | 215 days |
| Aggressive (risky) | Mar 22 | Oct 20 | 212 days |
Not very — frost dates can vary by ±27 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 2.8 days per decade). Spring is arriving earlier than it used to. Good news for gardeners.
Gardening Difficulty Score
Anne Arundel County presents some gardening challenges. Choose adapted varieties and plan around frost dates.
Local Gardening Help in Anne Arundel 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 Anne Arundel County's climate and soil.
County Extension Office
Anne Arundel 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 Anne Arundel County
Finding local nurseries & garden centers in Anne Arundel County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Anne Arundel 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 Anne Arundel County MD" or "garden center Anne Arundel 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 Anne Arundel County MD" or check your extension office and local parks department. Facebook groups like "Anne Arundel 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 Harmans
Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.
The practical takeaway: A 14-hour day in June produces dramatically more photosynthesis than a 10-hour day in November. Harmans's seasonal swing determines which crops can pack growth into spring vs. limp through fall.
Longest Day
14.7 hours
Summer solstice daylight
Shortest Day
9.3 hours
Winter solstice daylight
Peak Sun Hours
8.3 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 | 9.6 hr | 3.7 hr | Short day |
| February | 10.5 hr | 4.2 hr | Short day |
| March | 11.7 hr | 5.1 hr | Short day |
| April | 13 hr | 6.3 hr | Neutral |
| May | 14.1 hr | 7.1 hr | Long day |
| June | 14.7 hr | 7.9 hr | Long day |
| July | 14.5 hr | 8.3 hr | Long day |
| August | 13.5 hr | 7.1 hr | Neutral |
| September | 12.2 hr | 6 hr | Neutral |
| October | 11 hr | 5.3 hr | Short day |
| November | 9.8 hr | 3.6 hr | Short day |
| December | 9.3 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 Harmans
Monthly soil temps tell you when to plant warm-season crops, and when your compost pile is actively working.
Why it matters: Air temperature lies. Your air can be 70°F in April but the soil 4 inches down is still 50°F — too cold for tomatoes or peppers to root properly. Harmans's soil temperature curve tells you the real planting window. A $5 soil thermometer pays for itself in one season.
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 | 44°F | ❄️ Dormant | ~36 weeks |
| Feb | 38°F | 44°F | ❄️ Dormant | ~36 weeks |
| Mar | 45°F | 48°F | 🐢 Slow | ~24 weeks |
| Apr | 57°F | 55°F | ♻️ Active | ~14 weeks |
| May | 66°F | 65°F | 🔥 Peak | ~8 weeks |
| Jun | 77°F | 73°F | 🔥 Peak | ~8 weeks |
| Jul | 87°F | 80°F | 🔥 Peak | ~8 weeks |
| Aug | 85°F | 83°F | 🔥 Peak | ~8 weeks |
| Sep | 79°F | 78°F | 🔥 Peak | ~8 weeks |
| Oct | 68°F | 70°F | 🔥 Peak | ~8 weeks |
| Nov | 54°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 Harmans
Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.
Quick context: Warm humid regions cycle through pest generations 3-5x faster than cold dry regions. Harmans's pest score is your early-warning system: high score means commit to disease-resistant varieties and accept some crop loss to bugs.
Insect Pest Pressure
Moderate — common pests appear but manageable with monitoring.
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 | Moderate | May, Jun, Jul, Aug, Sep |
| Whiteflies | Low | Jun, Jul, Aug, Sep |
| Spider mites | Moderate | Jul, Aug |
Organic pest management tips
- Use row covers on susceptible crops during peak pest months
- Apply neem oil preventatively every 7-14 days during active pest season
- Interplant with strong-scented herbs (basil, marigold) to confuse pests
- Hand-pick larger pests (beetles, caterpillars) in early morning when they're sluggish
- Practice crop rotation — never plant the same family in the same spot within 3 years
- Watch for powdery mildew, downy mildew, blight — common in your climate
Cover Crops for Harmans
Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with planting dates calibrated for your area.
The practical takeaway: A fall-planted cover crop in Harmans is the closest thing to free soil amendment. Plant cereal rye or hairy vetch after harvest; chop it down before it flowers in spring; the soil it leaves behind out-grows any store-bought compost.
Spring Cover Crops (4 options) — Build soil before the main growing season
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Buckwheat | Apr 9 | Sep 8 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Cowpeas (southern peas) | Apr 5 | Sep 1 | ✓ Yes | Excellent nitrogen fixer for warm climates, edible |
| Sorghum-sudan grass | Apr 7 | Aug 25 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | Mar 7 | Sep 8 | ✓ 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 22 | Oct 6 | — | 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 | Sep 10 | Mar 13 | ✓ Yes | Fixes nitrogen, good for heavy clay soils |
| Crimson clover | Aug 28 | Mar 20 | ✓ Yes | Fixes nitrogen, attracts pollinators in spring |
| Daikon radish | Sep 23 | Mar 20 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Aug 9 | Mar 13 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Oct 2 | Mar 13 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Aug 1 | Mar 20 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Aug 3 | Mar 20 | — | Erosion control, weed suppression, good biomass |
Wind & Microclimate in Harmans
What this means for you: Wind dries soil, knocks over young transplants, and disrupts pollination for bees and butterflies. Harmans averages 6.6 mph — above 10 mph means windbreaks (shrubs, fences, taller crops to windward), staked tomatoes from day one, and an extra round of watering during dry windy spells. Lower wind = lower water bills and fewer broken stems.
Wind dries soil, stresses plants, and affects frost patterns. Understanding your exposure helps with garden placement.
Seasonal Wind Speed
Spring: 16 mph Summer: 10 mph
Fall: 10 mph Winter: 16 mph
Prevailing wind: W. Windy area — plant a windbreak hedge on the W side of your garden.
Windbreak Benefit
6.7/10
Moderately beneficial — a simple fence or trellis can protect delicate crops from wind stress.
Frost Pocket Risk
Low
Relatively flat terrain (176 ft range). Frost pocket risk is minimal — garden placement is flexible.
Rainwater Harvesting in Harmans
How much water you can collect, when to collect it, and what size system you need for your garden.
For new gardeners: A 1,000 sq ft roof captures about 600 gallons from a single 1" rainfall. Harmans gets 45" of rain a year — a couple of well-placed rain barrels can cover most summer watering. In dry climates the math's even better: every captured gallon is one you don't buy.
Annual Collection
20,434 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 750 gal tank.
Legal Status
Unrestricted
Rainwater harvesting is fully legal in your state with no restrictions.
Best Collection Months
Apr, Jun, Jul, Aug
Highest rainfall months — your barrels will fill up quickly during these months.
Months to Draw From Storage
Feb, Nov, 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 41.0 inches of rain per year
- A 1,000 sq ft roof can collect roughly 20,434 gallons annually
- Rainwater harvesting is fully legal in your state
- Stock up on stored water before your dry season (Feb, Nov, Dec)
- Use a first-flush diverter to keep roof debris out of your collection
🥬 Vegetables to Grow in Harmans
114 vegetables matched to Zone 8a with planting dates calibrated for Harmans.
Show all 114 vegetables with 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 25 | May 8 – Jul 10 | 30–50 |
| Asparagus | — | — | Apr 17 | — | — | 730–1095 |
| Beets | — | Mar 20 | — | Aug 25 | May 15 – Jun 12 | 50–70 |
| Belgian Endive | Feb 27 | Mar 20 | Apr 3 | Aug 25 | 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 25 | May 15 – Jun 19 | 40–60 |
| Broccoli | Feb 27 | Mar 20 | Apr 3 | Aug 25 | Jun 5 – Jul 17 | 60–90 |
| Broccoli Rabe | Feb 27 | Mar 20 | Apr 3 | Aug 25 | May 15 – Jun 19 | 40–60 |
| Brussels Sprouts | Feb 27 | Mar 20 | Apr 3 | Aug 25 | 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 25 | 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 25 | May 22 – Jun 26 | 60–80 |
| Cauliflower | Feb 27 | Mar 20 | Apr 3 | Aug 25 | May 29 – Jul 31 | 55–100 |
| Celeriac | Feb 27 | Mar 20 | Apr 3 | Aug 25 | Jul 17 – Aug 21 | 100–120 |
| Celery | Feb 27 | Mar 20 | Apr 3 | Aug 25 | Jun 26 – Aug 21 | 80–120 |
| Celtuce | Feb 27 | Mar 20 | Apr 3 | Aug 25 | Jun 5 – Jul 17 | 60–90 |
| Chard | Feb 27 | Mar 20 | Apr 3 | Aug 25 | 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 25 | Jun 26 – Aug 7 | 80–110 |
| Chicory | Feb 27 | Mar 20 | Apr 3 | Aug 25 | Jun 5 – Jul 17 | 60–85 |
| Chinese Cabbage | Feb 27 | Mar 20 | Apr 3 | Aug 25 | 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 25 | 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 25 | Apr 17 – May 8 | 14–21 |
| Crookneck Squash | Mar 6 | Apr 10 | Apr 17 | — | Jun 5 – Jul 3 | 45–60 |
| Crosne | — | Mar 20 | — | Aug 25 | Aug 21 – Oct 23 | 150–200 |
| Cucumber | Mar 6 | Apr 10 | Apr 17 | — | Jun 12 – Aug 7 | 50–70 |
| Daikon | — | Mar 20 | — | Aug 25 | 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 25 | May 22 – Jun 26 | 45–65 |
| Escarole | Feb 27 | Mar 20 | Apr 3 | Aug 25 | May 29 – Jun 26 | 50–70 |
| Fava Beans | Feb 27 | Mar 20 | Apr 3 | Aug 25 | Jun 19 – Jul 31 | 75–100 |
| Fennel | Feb 13 | Apr 10 | Apr 17 | — | Jun 19 – Jul 31 | 60–90 |
| Garlic | — | — | — | Sep 22 | Dec 22 – Jun 8 | 90–240 |
| Ginger | Feb 13 | Apr 10 | Apr 17 | — | Dec 18 – Jan 1 | 240–300 |
| 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 25 | May 22 – Jun 19 | 45–60 |
| Kale | Feb 27 | Mar 20 | Apr 3 | Aug 25 | May 29 – Jul 24 | 50–70 |
| Kidney Beans | — | Apr 10 | — | — | Jul 10 – Aug 14 | 85–110 |
| Kohlrabi | Feb 27 | Mar 20 | Apr 3 | Aug 25 | May 22 – Jun 26 | 45–65 |
| Komatsuna | Feb 27 | Mar 20 | Apr 3 | Aug 25 | May 8 – Jun 12 | 35–50 |
| Leeks | Feb 27 | Mar 20 | Apr 3 | Aug 25 | Jul 3 – Sep 18 | 90–150 |
| Lentils | Feb 27 | Mar 20 | Apr 3 | Aug 25 | Jun 26 – Aug 7 | 80–110 |
| Lettuce | Feb 27 | Mar 20 | Apr 3 | Aug 25 | 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 25 | 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 25 | Apr 10 – May 8 | 7–21 |
| Mitsuba | Feb 27 | Mar 20 | Mar 27 | Aug 25 | May 22 – Jul 17 | 50–70 |
| Mizuna | Feb 27 | Mar 20 | Apr 3 | Aug 25 | May 8 – Jun 5 | 30–45 |
| Mustard Greens | Feb 27 | Mar 20 | Apr 3 | Aug 25 | May 8 – Jul 10 | 30–50 |
| Napa Cabbage | Feb 27 | Mar 20 | Apr 3 | Aug 25 | 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 25 | Jul 3 – Aug 21 | 90–120 |
| Pac Choi | Feb 27 | Mar 20 | Apr 3 | Aug 25 | May 15 – Jun 12 | 40–55 |
| Parsnip | — | Mar 20 | — | Aug 25 | 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 25 | 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 25 | May 15 – Jun 19 | 40–60 |
| Radicchio | Feb 27 | Mar 20 | Apr 3 | Aug 25 | Jun 5 – Jul 10 | 60–80 |
| Radish | — | Mar 20 | — | Aug 25 | Apr 17 – May 8 | 22–35 |
| Rhubarb | — | — | Apr 24 | — | — | 365–730 |
| Romanesco | Feb 27 | Mar 20 | Apr 3 | Aug 25 | Jun 19 – Jul 31 | 75–100 |
| Rutabaga | — | Mar 20 | — | Aug 25 | Jun 12 – Jul 17 | 80–100 |
| Salsify | — | Mar 20 | — | Aug 25 | Jul 3 – Aug 14 | 100–130 |
| Savoy Cabbage | Feb 27 | Mar 20 | Apr 3 | Aug 25 | Jun 12 – Aug 7 | 70–110 |
| Scallions | Feb 27 | Mar 20 | Apr 3 | Aug 25 | 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 25 | 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 25 | 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 25 | 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 25 | 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 |
| Turmeric | Feb 13 | Apr 10 | Apr 17 | — | Dec 18 – Jan 1 | 240–300 |
| Turnip | — | Mar 20 | — | Aug 25 | May 1 – Jun 5 | 40–60 |
| Watercress | Feb 27 | Mar 20 | Apr 3 | Aug 25 | 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 Harmans
27 fruits matched to Zone 8a with planting dates calibrated for Harmans.
Show all 27 fruits with 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 |
| 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 |
| Honeydew | — | — | Apr 24 | — | Jul 17 – Aug 28 | 80–110 |
| Jostaberry | — | — | Apr 24 | — | — | 730–1095 |
| Kiwi | — | — | Apr 24 | — | — | 1095–1825 |
| 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 – Jan 8 | 90–365 |
🌿 Herbs to Grow in Harmans
39 herbs matched to Zone 8a with planting dates calibrated for Harmans.
Show all 39 herbs with dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Angelica | Feb 27 | Mar 20 | Mar 27 | Aug 25 | — | 365–730 |
| Anise | Feb 27 | Mar 20 | Mar 27 | Aug 25 | 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 25 | May 22 – Jul 10 | 50–60 |
| Caraway | Feb 27 | Mar 20 | Mar 27 | Aug 25 | — | 365–450 |
| Catnip | — | — | Apr 10 | — | Jun 12 – Aug 14 | 60–80 |
| Chamomile | Feb 27 | Mar 20 | Mar 27 | Aug 25 | May 29 – Aug 7 | 60–90 |
| Chervil | Feb 27 | Mar 20 | Mar 27 | Aug 25 | May 8 – Jul 10 | 40–60 |
| Chives | — | — | Apr 10 | — | Jun 12 – Aug 21 | 60–90 |
| Cilantro | Feb 27 | Mar 20 | Mar 27 | Aug 25 | May 8 – Jul 10 | 40–60 |
| Comfrey | — | — | Apr 10 | — | Jun 12 – Aug 21 | 60–90 |
| Cumin | Feb 27 | Mar 20 | Mar 27 | Aug 25 | Jul 10 – Sep 11 | 100–120 |
| Dill | Feb 27 | Mar 20 | Mar 27 | Aug 25 | 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 25 | 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 |
| Lemon Verbena | Feb 13 | Apr 10 | Apr 17 | — | Jun 19 – Aug 28 | 60–90 |
| Lemongrass | Feb 13 | Apr 10 | Apr 17 | — | Jul 3 – Oct 2 | 75–120 |
| 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 25 | 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 25 | May 8 – Jul 10 | 40–60 |
| Stevia | Feb 13 | Apr 10 | Apr 17 | — | Jun 19 – Aug 28 | 60–90 |
| 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 Harmans
54 flowers matched to Zone 8a with planting dates calibrated for Harmans.
Show all 54 flowers with dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Bloom | Days to Maturity |
|---|---|---|---|---|---|---|
| Ageratum | Feb 20 | Mar 27 | Mar 27 | — | May 22 – Oct 9 | 60–75 |
| Alliums | — | — | — | Sep 29 | Oct 27 – Nov 17 | 28–42 |
| Anemones | — | — | — | Sep 8 | Sep 22 – Oct 20 | 90–120 |
| Astilbe | Feb 6 | — | Apr 3 | — | Jun 12 – Jul 31 | 70–100 |
| Bachelor's Button | — | Feb 20 | Mar 20 | Sep 8 | May 22 – Sep 4 | 60–90 |
| Begonias | Jan 23 | — | Mar 27 | — | Jun 5 – Oct 23 | 70–90 |
| Black-eyed Susan | Feb 6 | Mar 27 | Apr 3 | — | Jun 12 – Oct 30 | 60–80 |
| Bleeding Hearts | Feb 6 | — | Apr 3 | — | May 22 – Jun 19 | 60–90 |
| Calendula | — | Feb 20 | Mar 20 | Aug 25 | May 8 – Sep 18 | 50–70 |
| California Poppy | — | — | — | Sep 8 | Nov 17 – Feb 23 | 60–90 |
| Celosia | Mar 6 | Mar 27 | Mar 27 | — | May 29 – Oct 23 | 60–90 |
| Columbine | Feb 6 | Apr 3 | Apr 3 | — | May 22 – Jun 19 | 70–100 |
| Coreopsis | Feb 6 | Mar 27 | Apr 3 | — | Jun 5 – Oct 30 | 60–80 |
| Cosmos | Mar 6 | Mar 20 | Mar 20 | — | May 29 – Oct 16 | 60–90 |
| Crocus | — | — | — | Oct 6 | Sep 8 – Sep 29 | 10–20 |
| Daffodils | — | — | — | Sep 29 | Sep 8 – Oct 6 | 20–40 |
| Dahlias | Mar 13 | Apr 3 | Apr 3 | — | Jun 12 – Nov 13 | 70–120 |
| Daylily | Feb 6 | — | Apr 3 | — | Jun 12 – Oct 30 | 60–90 |
| Dianthus | Feb 6 | Feb 20 | Feb 27 | — | Apr 17 – Jul 3 | 60–80 |
| Echinacea (Purple Coneflower) | Feb 6 | Apr 3 | Apr 3 | — | Jun 12 – Oct 30 | 70–90 |
| Foxglove | Feb 6 | Apr 3 | Apr 3 | — | May 22 – Jun 19 | 80–120 |
| Freesia | — | — | — | Sep 22 | Oct 20 – Nov 17 | 84–112 |
| Gaillardia (Blanket Flower) | Feb 13 | Mar 27 | Mar 27 | — | Jun 5 – Nov 20 | 70–100 |
| Geraniums | Jan 23 | — | Mar 27 | — | Jun 5 – Oct 23 | 70–100 |
| Gladiolus | — | Apr 3 | Apr 3 | — | Jun 12 – Nov 13 | 70–100 |
| Hostas | Jan 30 | — | Apr 3 | — | Jun 12 – Oct 16 | 60–90 |
| Hyacinths | — | — | — | Oct 6 | Sep 29 – Oct 20 | 14–28 |
| Hydrangeas | Jan 30 | — | Apr 3 | — | Jun 12 – Oct 16 | 90–150 |
| Impatiens | Feb 6 | — | Apr 3 | — | Jun 12 – Oct 30 | 60–75 |
| Irises | — | Division | Apr 3 | — | May 22 – Jun 26 | 60–100 |
| Larkspur | — | Mar 6 | — | Aug 25 | May 15 – Aug 21 | 60–90 |
| Lavender | Jan 30 | — | Apr 10 | — | Jun 19 – Sep 25 | 90–120 |
| Lilies | — | Division | Apr 3 | — | Jun 12 – Oct 2 | 70–120 |
| Lobelia | Feb 6 | — | Feb 27 | — | Apr 24 – Jun 19 | 70–80 |
| Lupine | Feb 6 | Apr 3 | Apr 3 | — | May 22 – Jun 19 | 75–100 |
| Marigolds | Feb 20 | Mar 27 | Mar 27 | — | May 22 – Sep 25 | 50–70 |
| Nasturtium | Mar 6 | Mar 27 | Mar 27 | — | May 22 – Oct 23 | 55–65 |
| Pansy | Jan 23 | — | Mar 20 | Aug 25 | May 15 – Aug 21 | 70–90 |
| Peonies | — | Division | Apr 3 | — | May 29 – Jun 26 | 90–120 |
| Petunia | Feb 6 | — | Apr 3 | — | Jun 12 – Oct 16 | 70–90 |
| Phlox | Feb 6 | Apr 3 | Apr 3 | — | Jun 12 – Aug 21 | 80–110 |
| Portulaca | Mar 6 | Mar 27 | Mar 27 | — | May 15 – Oct 9 | 50–70 |
| Ranunculus | — | — | — | Sep 8 | Sep 22 – Oct 27 | 90–120 |
| Roses | Jan 30 | — | Apr 3 | — | Jun 12 – Oct 30 | 90–180 |
| Salvia | Feb 6 | — | Mar 27 | — | Jun 5 – Oct 23 | 70–90 |
| Sedum (Stonecrop) | Feb 6 | — | Apr 3 | — | Jul 24 – Oct 16 | 60–90 |
| Snapdragon | Jan 23 | Feb 27 | Mar 20 | Aug 25 | May 29 – Sep 18 | 70–100 |
| Sunflower | Mar 13 | Mar 27 | Mar 27 | — | Jun 19 – Oct 23 | 70–100 |
| Sweet Alyssum | Feb 20 | Feb 27 | Mar 20 | Sep 8 | May 1 – Aug 21 | 45–60 |
| Sweet Pea | — | — | — | Sep 1 | Nov 10 – Feb 2 | 65–85 |
| Tulips | — | — | — | Oct 6 | Sep 22 – Oct 20 | 15–30 |
| Vinca (Annual) | Jan 23 | — | Mar 27 | — | Jun 5 – Oct 23 | 70–90 |
| Yarrow | Feb 6 | Mar 27 | Apr 3 | — | Jun 5 – Oct 30 | 60–90 |
| Zinnia | Mar 6 | Mar 27 | Mar 27 | — | Jun 5 – Oct 23 | 60–70 |
Monthly Planting Guide for Harmans
ZIP Codes in Harmans
Click any ZIP to see its specific frost, soil, and climate measurements (some ZIPs differ noticeably from the town aggregate):
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Anne Arundel County.
Your Anne Arundel County Garden Planner — Free
A 22-page printable planner built for Anne Arundel County (Zone 8a). 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