Highland County, OH — Planting Guide
Top priorities for Highland County, Ohio gardeners in June
June rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Highland County, Ohio.
-
Indoor seed-starting week for basil, pole beans, and thai basil
You're about 18 weeks out from your last frost — the perfect window to get these germinating indoors.
-
It's harvest week for carrots, green beans, and kale
This is the payoff month. Bring a basket, bring a friend, and get into the beds.
To set up a strong July, finish these tasks
- Starting indoors: peppers, begonias, and eggplant
- First harvests: basil, carrots, and cucumber
Highland County is in USDA Zone 6b. The average last spring frost is April 22 and the first fall frost is October 21, giving you a growing season of approximately 182 days.
At an elevation of 556 ft, Highland County receives approximately 33.7 in of rainfall annually. Summer highs average 85°F with winter lows around 26°F. The predominant soil type is Silt Loam.
Based on 31 years of NOAA climate station data, the last frost date here varies by 29 days year to year — ranging from April 7 in warm years to May 6 in cold years. The growing season is trending shorter by about 1.98 days per decade. Highland County scores 61/100 (Good) on the Microclimate Index.
🌡️ Zone
6b (-5°F to 0°F min)
❄️ Last Frost
April 22
🍂 First Frost
October 21
📅 Growing Season
182 days
⛰️ Elevation
556 ft
🌧️ Annual Rainfall
33.7 in
Monthly Watering Calendar for Highland County
When you'll need to water your garden — based on average monthly rainfall vs. the ~1 inch/week most gardens need.
Why this matters: In Highland County, the watering question isn't "how often" — it's "is the soil moist 4 inches down?" Stick a finger in. Dry? Water. Damp? Wait. The 34" annual rainfall is just the starting context.
View detailed monthly data
| Month | Avg Rainfall | Rainy Days | Extra Water Needed | Watering Effort |
|---|---|---|---|---|
| Jan | 1.3 in | 8 days | — | None |
| Feb | 1.7 in | 8 days | — | None |
| Mar | 2.2 in | 8 days | 2.1 in | High |
| Apr | 3.2 in | 9 days | 1.1 in | Moderate |
| May | 3.5 in | 11 days | 0.8 in | Moderate |
| Jun | 4.1 in | 10 days | 0.2 in | Low |
| Jul | 3.9 in | 9 days | 0.4 in | Low |
| Aug | 3.7 in | 8 days | 0.6 in | Moderate |
| Sep | 2.9 in | 8 days | 1.4 in | Moderate |
| Oct | 2.8 in | 7 days | 1.5 in | Moderate |
| Nov | 2.6 in | 8 days | — | None |
| Dec | 1.8 in | 8 days | — | None |
Annual total: 33.7 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.
Highland County Soil Profile
Soil Type
Silt Loam
Soil pH
5.8-7.1
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) | May 6 | Nov 2 | 180 days |
| Cautious | Apr 26 | Oct 27 | 184 days |
| Average year | Apr 22 | Oct 21 | 182 days |
| Optimistic | Apr 14 | Oct 17 | 186 days |
| Aggressive (risky) | Apr 7 | Oct 7 | 183 days |
Not very — frost dates can vary by ±29 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 shorter here (about 2 days per decade). Use the "Conservative" dates and choose fast-maturing varieties.
Gardening Difficulty Score
Highland County offers good growing conditions. A little planning around frost dates goes a long way.
Local Gardening Help in Highland 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 Highland County's climate and soil.
County Extension Office
Highland County Ohio State University Extension Extension Office
Phone: 614-292-6181
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 Highland County
Finding local nurseries & garden centers in Highland County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Highland 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 Highland County OH" or "garden center Highland 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 Highland County OH" or check your extension office and local parks department. Facebook groups like "Highland County Gardeners" or "Ohio 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 Highland County
Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.
Quick context: Photoperiod-sensitive crops will fail spectacularly if planted at the wrong latitude. Sweet onions in Michigan? Tiny. Spanish onions in Florida? Tiny. Match variety to Highland County's daylight pattern and you'll see the difference.
Longest Day
14.7 hours
Summer solstice daylight
Shortest Day
9.3 hours
Winter solstice daylight
Peak Sun Hours
9.3 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 | 9.5 hr | 3.7 hr | Short day |
| February | 10.5 hr | 4.7 hr | Short day |
| March | 11.7 hr | 5.8 hr | Short day |
| April | 13 hr | 7.1 hr | Neutral |
| May | 14.1 hr | 8 hr | Long day |
| June | 14.7 hr | 8.8 hr | Long day |
| July | 14.5 hr | 9.3 hr | Long day |
| August | 13.5 hr | 8.3 hr | Neutral |
| September | 12.2 hr | 6.7 hr | Neutral |
| October | 10.9 hr | 5.8 hr | Short day |
| November | 9.8 hr | 3.8 hr | Short day |
| December | 9.3 hr | 3.6 hr | Short day |
Peak sun hours factor in typical cloud cover — use these for solar panel and shade-planning calculations.
Soil Temperature & Composting in Highland County
Monthly soil temps tell you when to plant warm-season crops, and when your compost pile is actively working.
What this means for you: Most root crops germinate well at 50-60°F. Most fruit-bearing crops want 65-75°F. Highland 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
Jun
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 | 30°F | 39°F | ❄️ Dormant | ~36 weeks |
| Feb | 33°F | 39°F | ❄️ Dormant | ~36 weeks |
| Mar | 39°F | 42°F | ❄️ Dormant | ~36 weeks |
| Apr | 51°F | 51°F | ♻️ Active | ~14 weeks |
| May | 61°F | 61°F | ♻️ Active | ~14 weeks |
| Jun | 73°F | 69°F | 🔥 Peak | ~8 weeks |
| Jul | 82°F | 76°F | 🔥 Peak | ~8 weeks |
| Aug | 83°F | 77°F | 🔥 Peak | ~8 weeks |
| Sep | 75°F | 75°F | 🔥 Peak | ~8 weeks |
| Oct | 64°F | 65°F | ♻️ Active | ~14 weeks |
| Nov | 51°F | 56°F | ♻️ Active | ~14 weeks |
| Dec | 37°F | 46°F | ❄️ Dormant | ~36 weeks |
Highlighted rows = soil 60°F+ (safe for warm-season transplants). Compost finishes fastest during peak activity months.
Pest & Disease Pressure in Highland 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 Highland 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
Moderate — common pests appear but manageable with monitoring.
Disease Risk
Low disease risk — dry conditions reduce fungal problems.
Seasonal Risk
View 6 common pests in your area
| Pest | Risk Level | Peak Months |
|---|---|---|
| Aphids | High | Apr, May, Jun, Jul, Aug, Sep |
| Japanese beetles | High | Jun, Jul, Aug |
| Squash vine borers | Moderate | Jun, Jul |
| Tomato hornworms | Moderate | Jun, Jul, Aug |
| Cucumber beetles | Low | May, Jun, Jul |
| Stink bugs | Low | Jun, Jul, Aug, Sep |
Organic pest management tips
- Maintain healthy soil with regular compost additions to build natural pest resistance
- Practice crop rotation annually to break pest cycles
- Encourage beneficial insects with flowering herbs like dill, fennel, and yarrow
Cover Crops for Highland County
Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with planting dates calibrated for your area.
Why this matters: Cover crops are the experienced gardener's secret weapon. Highland County's climate determines which species thrive: clover and vetch in mild winters, cereal rye and Austrian peas in cold ones.
Spring Cover Crops (3 options) — Build soil before the main growing season
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Buckwheat | May 2 | Aug 26 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Sorghum-sudan grass | May 5 | Aug 19 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | Mar 28 | Aug 26 | ✓ 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 | May 22 | Oct 7 | — | 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 18 | Apr 1 | ✓ Yes | Fixes nitrogen, good for heavy clay soils |
| Crimson clover | Aug 24 | Apr 1 | ✓ Yes | Fixes nitrogen, attracts pollinators in spring |
| Daikon radish | Sep 2 | Apr 8 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Aug 12 | Apr 8 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Sep 17 | Apr 8 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Jul 27 | Apr 1 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Jul 18 | Apr 8 | — | Erosion control, weed suppression, good biomass |
Wind & Microclimate in Highland County
Why it matters: Light wind is good (strengthens stems, aids pollination); strong wind is bad (snaps stems, dries leaves, scatters seeds). Highland County averages 9.3 mph. If you garden near coast, ridge, or open plains, you're likely above that — plan for it.
Wind dries soil, stresses plants, and affects frost patterns. Understanding your exposure helps with garden placement.
Seasonal Wind Speed
Spring: 11 mph Summer: 9 mph
Fall: 11 mph Winter: 14 mph
Prevailing wind: SW. Moderate wind — consider a temporary windbreak for young seedlings.
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 (117 ft range). Frost pocket risk is minimal — garden placement is flexible.
Rainwater Harvesting in Highland County
How much water you can collect, when to collect it, and what size system you need for your garden.
Why it matters: Rainwater is unchlorinated, unfluoridated, and at ambient temperature — plants actually prefer it. Highland County's 34" annual rainfall means even a small 50-gallon barrel catches enough for a few weeks of garden watering between storms.
Annual Collection
16,796 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 1,750 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
Jan, Feb, 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 33.7 inches of rain per year
- A 1,000 sq ft roof can collect roughly 16,796 gallons annually
- Rainwater harvesting is fully legal in your state
- Stock up on stored water before your dry season (Jan, Feb, Dec)
- Use a first-flush diverter to keep roof debris out of your collection
Soil & Growing Conditions in Highland County
Soil Type
Silt Loam
Soil pH 5.8–7.1 · Well Drained drainage
Native soil is well-suited to most vegetables and herbs with regular compost additions.
Watering Needs
Drought stress: 5.5/10
Moderate drought pressure. Drip irrigation and mulching are highly recommended to maintain soil moisture through summer.
Season Tips
182-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 Highland County
107 vegetables that grow well in Zone 6b with planting dates for Highland County.
Show all 107 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Acorn Squash | Mar 18 | Apr 29 | May 6 | — | Jul 29 – Sep 2 | 80–100 |
| Amaranth | Feb 25 | Apr 29 | May 6 | — | Aug 5 – Sep 23 | 90–120 |
| Arugula | Mar 18 | Apr 8 | Apr 22 | Aug 12 | May 27 – Jul 29 | 30–50 |
| Asparagus | — | — | May 6 | — | — | 730–1095 |
| Beets | — | Apr 8 | — | Aug 12 | Jun 3 – Jul 1 | 50–70 |
| Belgian Endive | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Aug 12 – Oct 7 | 110–150 |
| Bitter Melon | Feb 25 | Apr 29 | May 6 | — | Jul 8 – Aug 19 | 60–90 |
| Black Beans | — | Apr 29 | — | — | Jul 29 – Sep 16 | 90–120 |
| Bok Choy | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jun 3 – Jul 8 | 40–60 |
| Broccoli | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jun 24 – Aug 5 | 60–90 |
| Broccoli Rabe | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jun 3 – Jul 8 | 40–60 |
| Brussels Sprouts | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jul 22 – Sep 16 | 90–130 |
| Butternut Squash | Mar 18 | Apr 29 | May 6 | — | Aug 5 – Sep 9 | 85–110 |
| Cabbage | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jun 24 – Aug 19 | 60–100 |
| Calabash | Feb 25 | Apr 29 | May 6 | — | Jul 29 – Sep 23 | 80–120 |
| Carrots | — | Apr 8 | — | Aug 12 | Jun 10 – Jul 15 | 60–80 |
| Cauliflower | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jun 17 – Aug 19 | 55–100 |
| Celeriac | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Aug 5 – Sep 9 | 100–120 |
| Celery | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jul 15 – Sep 9 | 80–120 |
| Celtuce | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jun 24 – Aug 5 | 60–90 |
| Chard | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jun 17 – Aug 5 | 50–60 |
| Chickpeas | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jul 15 – Aug 26 | 80–110 |
| Chicory | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jun 24 – Aug 5 | 60–85 |
| Chinese Cabbage | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jun 17 – Jul 15 | 50–70 |
| Christmas Lima Beans | Feb 25 | Apr 29 | May 6 | — | Jul 29 – Sep 2 | 80–100 |
| Collard Greens | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jun 17 – Aug 19 | 55–75 |
| Corn | — | Apr 29 | — | — | Jul 1 – Aug 26 | 60–100 |
| Cowpeas | — | Apr 29 | — | — | Jul 1 – Aug 12 | 60–90 |
| Cress | Mar 18 | Apr 8 | Apr 22 | Aug 12 | May 6 – May 27 | 14–21 |
| Crookneck Squash | Mar 18 | Apr 29 | May 6 | — | Jun 24 – Jul 22 | 45–60 |
| Crosne | — | Apr 8 | — | Aug 12 | Sep 9 – Oct 21 | 150–200 |
| Cucumber | Mar 18 | Apr 29 | May 6 | — | Jul 1 – Aug 26 | 50–70 |
| Daikon | — | Apr 8 | — | Aug 12 | Jun 3 – Jul 1 | 50–70 |
| Delicata Squash | Mar 18 | Apr 29 | May 6 | — | Jul 29 – Sep 2 | 80–100 |
| Edamame | — | Apr 29 | — | — | Jul 15 – Aug 26 | 75–100 |
| Eggplant | Feb 11 | Apr 29 | May 6 | — | Jul 15 – Sep 16 | 65–85 |
| Endive | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jun 10 – Jul 15 | 45–65 |
| Escarole | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jun 17 – Jul 15 | 50–70 |
| Fava Beans | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jul 8 – Aug 19 | 75–100 |
| Fennel | Feb 25 | Apr 29 | May 6 | — | Jul 8 – Aug 19 | 60–90 |
| Garlic | — | — | — | Sep 9 | Dec 9 – Mar 24 | 90–240 |
| Green Beans | — | Apr 29 | — | — | Jun 24 – Aug 19 | 50–65 |
| Horseradish | — | — | May 6 | — | Sep 9 – Nov 18 | 120–180 |
| Hot Peppers | Feb 11 | Apr 29 | May 6 | — | Jul 15 – Oct 21 | 70–120 |
| Hubbard Squash | Mar 18 | Apr 29 | May 6 | — | Aug 19 – Sep 23 | 100–120 |
| Kabocha | Mar 18 | Apr 29 | May 6 | — | Aug 5 – Sep 2 | 85–100 |
| Kai Lan | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jun 10 – Jul 8 | 45–60 |
| Kale | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jun 17 – Aug 12 | 50–70 |
| Kidney Beans | — | Apr 29 | — | — | Jul 29 – Sep 2 | 85–110 |
| Kohlrabi | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jun 10 – Jul 15 | 45–65 |
| Komatsuna | Mar 18 | Apr 8 | Apr 22 | Aug 12 | May 27 – Jul 1 | 35–50 |
| Leeks | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jul 22 – Oct 7 | 90–150 |
| Lentils | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jul 15 – Aug 26 | 80–110 |
| Lettuce | Mar 18 | Apr 8 | Apr 22 | Aug 12 | May 27 – Aug 5 | 30–60 |
| Lima Beans | — | Apr 29 | — | — | Jul 1 – Aug 12 | 60–90 |
| Loofah | Feb 25 | Apr 29 | May 6 | — | Aug 19 – Oct 21 | 100–150 |
| Luffa | Feb 25 | Apr 29 | May 6 | — | Aug 5 – Oct 21 | 90–150 |
| Mache | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jun 3 – Jul 8 | 40–60 |
| Melon | Mar 18 | Apr 29 | May 6 | — | Jul 15 – Sep 2 | 70–100 |
| Microgreens | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Apr 29 – May 27 | 7–21 |
| Mitsuba | Mar 18 | Apr 8 | Apr 15 | Aug 12 | Jun 10 – Aug 5 | 50–70 |
| Mizuna | Mar 18 | Apr 8 | Apr 22 | Aug 12 | May 27 – Jun 24 | 30–45 |
| Mustard Greens | Mar 18 | Apr 8 | Apr 22 | Aug 12 | May 27 – Jul 29 | 30–50 |
| Napa Cabbage | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jun 17 – Jul 22 | 55–75 |
| New Zealand Spinach | Feb 25 | Apr 29 | May 6 | — | Jul 1 – Jul 29 | 55–70 |
| Okra | Feb 25 | Apr 29 | May 6 | — | Jul 1 – Aug 26 | 50–65 |
| Onion | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jul 22 – Sep 9 | 90–120 |
| Pac Choi | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jun 3 – Jul 1 | 40–55 |
| Parsnip | — | Apr 8 | — | Aug 12 | Jul 22 – Sep 2 | 100–130 |
| Patty Pan Squash | Mar 18 | Apr 29 | May 6 | — | Jun 24 – Jul 22 | 45–60 |
| Peas | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jun 17 – Aug 12 | 55–70 |
| Peppers | Feb 11 | Apr 29 | May 6 | — | Jul 8 – Sep 16 | 60–90 |
| Pole Beans | Feb 25 | Apr 29 | May 6 | — | Jul 1 – Aug 26 | 55–70 |
| Potatoes | Feb 25 | Apr 29 | May 6 | — | Jul 15 – Sep 23 | 70–120 |
| Pumpkin | Mar 18 | Apr 29 | May 6 | — | Aug 5 – Sep 23 | 85–120 |
| Purslane | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jun 3 – Jul 8 | 40–60 |
| Radicchio | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jun 24 – Jul 29 | 60–80 |
| Radish | — | Apr 8 | — | Aug 12 | May 6 – May 27 | 22–35 |
| Rhubarb | — | — | May 13 | — | — | 365–730 |
| Romanesco | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jul 8 – Aug 19 | 75–100 |
| Rutabaga | — | Apr 8 | — | Aug 12 | Jul 1 – Aug 5 | 80–100 |
| Salsify | — | Apr 8 | — | Aug 12 | Jul 22 – Sep 2 | 100–130 |
| Savoy Cabbage | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jul 1 – Aug 26 | 70–110 |
| Scallions | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jun 17 – Jul 15 | 50–70 |
| Scarlet Runner Beans | Feb 25 | Apr 29 | May 6 | — | Jul 8 – Aug 12 | 60–80 |
| Shallot | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jul 22 – Sep 9 | 90–120 |
| Shiso | Mar 4 | Apr 29 | May 6 | — | Jul 1 – Aug 26 | 50–70 |
| Snap Peas | Feb 25 | Apr 29 | May 6 | — | Jul 1 – Aug 26 | 55–70 |
| Snow Peas | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jun 17 – Aug 12 | 50–65 |
| Soybeans | — | Apr 29 | — | — | Jul 22 – Sep 16 | 80–120 |
| Spaghetti Squash | Mar 18 | Apr 29 | May 6 | — | Aug 5 – Sep 2 | 85–100 |
| Spinach | Mar 18 | Apr 8 | Apr 22 | Aug 12 | May 27 – Jul 29 | 35–50 |
| Squash (Summer) | Mar 18 | Apr 29 | May 6 | — | Jun 24 – Aug 26 | 45–65 |
| Squash (Winter) | Mar 18 | Apr 29 | May 6 | — | Jul 29 – Sep 23 | 80–120 |
| Sunchoke | — | — | May 6 | — | Aug 26 – Oct 21 | 110–150 |
| Sweet Corn | — | Apr 29 | — | — | Jul 1 – Aug 12 | 60–90 |
| Sweet Potatoes | Feb 25 | Apr 29 | May 6 | — | Aug 5 – Sep 23 | 90–120 |
| Tatsoi | Mar 18 | Apr 8 | Apr 22 | Aug 12 | May 27 – Jul 1 | 35–50 |
| Tomatillo | Feb 25 | Apr 29 | May 6 | — | Jul 8 – Sep 16 | 60–85 |
| Tomatoes | Feb 25 | Apr 29 | May 6 | — | Jul 8 – Sep 16 | 60–85 |
| Turnip | — | Apr 8 | — | Aug 12 | May 20 – Jun 24 | 40–60 |
| Watercress | Mar 18 | Apr 8 | Apr 22 | Aug 12 | Jun 3 – Jul 8 | 40–60 |
| Watermelon | Mar 18 | Apr 29 | May 6 | — | Jul 15 – Sep 2 | 70–100 |
| Wax Beans | — | Apr 29 | — | — | Jun 24 – Aug 19 | 50–65 |
| Winter Melon | Feb 25 | Apr 29 | May 6 | — | Aug 5 – Sep 23 | 90–120 |
| Yard Long Beans | Feb 25 | Apr 29 | May 6 | — | Jul 1 – Aug 12 | 55–80 |
| Zucchini | Mar 18 | Apr 29 | May 6 | — | Jun 24 – Aug 19 | 45–60 |
🍓 Fruits to Grow in Highland County
27 fruits that grow well in Zone 6b with planting dates for Highland County.
Show all 27 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Alpine Strawberries | — | — | May 13 | — | Aug 12 – Nov 25 | 90–180 |
| Aronia | — | — | May 13 | — | — | 730–1095 |
| Blackberries | — | — | May 13 | — | — | 365–730 |
| Blueberries | — | — | May 13 | — | — | 730–1095 |
| Boysenberries | — | — | May 13 | — | — | 365–730 |
| Cantaloupe | — | — | May 13 | — | Jul 22 – Aug 26 | 70–90 |
| Che Fruit | — | — | May 13 | — | — | 1095–1825 |
| Cranberries | — | — | May 13 | — | — | 730–1095 |
| Currants | — | — | May 13 | — | — | 730–1095 |
| Elderberries | — | — | May 13 | — | — | 730–1095 |
| Goji Berries | — | — | May 13 | — | — | 730–1095 |
| Gooseberries | — | — | May 13 | — | — | 730–1095 |
| Grapes | — | — | May 13 | — | — | 730–1095 |
| Ground Cherry | — | — | May 13 | — | Jul 22 – Sep 16 | 65–80 |
| Hardy Kiwi | — | — | May 13 | — | — | 1095–1825 |
| Haskaps | — | — | May 13 | — | — | 730–1095 |
| Honeydew | — | — | May 13 | — | Aug 5 – Sep 16 | 80–110 |
| Jostaberry | — | — | May 13 | — | — | 730–1095 |
| Lingonberries | — | — | May 13 | — | — | 730–1095 |
| Medlar | — | — | May 13 | — | — | 1095–1825 |
| Mulberries | — | — | May 13 | — | — | 730–1825 |
| Pawpaw | — | — | May 13 | — | — | 1095–2555 |
| Persimmon | — | — | May 13 | — | — | 1095–2555 |
| Quince | — | — | May 13 | — | — | 1095–1825 |
| Raspberries | — | — | May 13 | — | — | 365–730 |
| Serviceberries | — | — | May 13 | — | — | 730–1095 |
| Strawberries | — | — | May 13 | — | Aug 12 – Nov 25 | 90–365 |
🌿 Herbs to Grow in Highland County
35 herbs that grow well in Zone 6b with planting dates for Highland County.
Show all 35 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Angelica | Mar 18 | Apr 8 | Apr 15 | Aug 12 | — | 365–730 |
| Anise | Mar 18 | Apr 8 | Apr 15 | Aug 12 | Jul 15 – Sep 30 | 90–120 |
| Basil | Mar 4 | Apr 29 | May 6 | — | Jul 1 – Sep 2 | 50–75 |
| Bee Balm | — | — | Apr 29 | — | Jul 29 – Oct 14 | 90–120 |
| Borage | Mar 18 | Apr 8 | Apr 15 | Aug 12 | Jun 10 – Jul 29 | 50–60 |
| Caraway | Mar 18 | Apr 8 | Apr 15 | Aug 12 | — | 365–450 |
| Catnip | — | — | Apr 29 | — | Jul 1 – Sep 2 | 60–80 |
| Chamomile | Mar 18 | Apr 8 | Apr 15 | Aug 12 | Jun 17 – Aug 26 | 60–90 |
| Chervil | Mar 18 | Apr 8 | Apr 15 | Aug 12 | May 27 – Jul 29 | 40–60 |
| Chives | — | — | Apr 29 | — | Jul 1 – Sep 9 | 60–90 |
| Cilantro | Mar 18 | Apr 8 | Apr 15 | Aug 12 | May 27 – Jul 29 | 40–60 |
| Comfrey | — | — | Apr 29 | — | Jul 1 – Sep 9 | 60–90 |
| Cumin | Mar 18 | Apr 8 | Apr 15 | Aug 12 | Jul 29 – Sep 30 | 100–120 |
| Dill | Mar 18 | Apr 8 | Apr 15 | Aug 12 | May 27 – Jul 29 | 40–60 |
| Epazote | Mar 4 | Apr 29 | May 6 | — | Jun 24 – Aug 19 | 45–60 |
| Fennel (herb) | Mar 18 | Apr 8 | Apr 15 | Aug 12 | Jun 17 – Aug 26 | 60–90 |
| Feverfew | — | — | Apr 29 | — | Jul 29 – Oct 14 | 90–120 |
| Garlic Chives | — | — | Apr 29 | — | Jul 1 – Sep 9 | 60–90 |
| Horehound | — | — | Apr 29 | — | Jul 15 – Sep 9 | 75–90 |
| Hyssop | — | — | Apr 29 | — | Jul 8 – Sep 9 | 70–90 |
| Lemon Balm | — | — | Apr 29 | — | Jul 1 – Aug 19 | 60–70 |
| Lemon Thyme | — | — | Apr 29 | — | Jul 8 – Sep 9 | 70–90 |
| Lovage | — | — | Apr 29 | — | Jul 8 – Sep 9 | 70–90 |
| Marjoram | — | — | Apr 29 | — | Jul 1 – Sep 9 | 60–90 |
| Mint | — | — | Apr 29 | — | Jul 1 – Sep 9 | 60–90 |
| Oregano | — | — | Apr 29 | — | Jul 1 – Sep 9 | 60–90 |
| Parsley | Mar 18 | Apr 8 | Apr 15 | Aug 12 | Jun 17 – Aug 19 | 60–80 |
| Rue | — | — | Apr 29 | — | Jul 8 – Sep 9 | 70–90 |
| Sage | — | — | Apr 29 | — | Jul 15 – Sep 9 | 75–90 |
| Savory | — | — | Apr 29 | — | Jun 24 – Aug 19 | 50–70 |
| Sorrel | Mar 18 | Apr 8 | Apr 15 | Aug 12 | May 27 – Jul 29 | 40–60 |
| Tarragon | — | — | Apr 29 | — | Jul 1 – Sep 9 | 60–90 |
| Thai Basil | Mar 4 | Apr 29 | May 6 | — | Jul 1 – Sep 2 | 50–75 |
| Thyme | — | — | Apr 29 | — | Jul 8 – Sep 9 | 70–90 |
| Valerian | — | — | Apr 29 | — | Sep 2 – Nov 11 | 120–180 |
🌸 Flowers to Grow in Highland County
53 flowers that grow well in Zone 6b with planting dates for Highland County.
Show all 53 flowers with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Bloom | Days to Maturity |
|---|---|---|---|---|---|---|
| Ageratum | Mar 4 | Apr 22 | Apr 22 | — | Jun 17 – Sep 30 | 60–75 |
| Alliums | — | — | — | Sep 9 | Oct 7 – Nov 4 | 28–42 |
| Anemones | Mar 25 | — | Apr 22 | — | May 20 – Jun 17 | 90–120 |
| Astilbe | Feb 18 | — | Apr 29 | — | Jul 8 – Sep 16 | 70–100 |
| Bachelor's Button | Mar 11 | Mar 25 | Apr 22 | Sep 9 | Jun 24 – Sep 16 | 60–90 |
| Begonias | Feb 11 | — | Apr 29 | — | Jul 8 – Oct 14 | 70–90 |
| Black-eyed Susan | Feb 18 | Apr 22 | Apr 29 | — | Jul 15 – Nov 4 | 60–80 |
| Bleeding Hearts | Feb 18 | — | Apr 29 | — | Jun 24 – Jul 29 | 60–90 |
| Calendula | Mar 11 | Mar 25 | Apr 22 | — | Jun 10 – Sep 16 | 50–70 |
| California Poppy | — | Mar 25 | — | — | Jun 3 – Jul 29 | 60–90 |
| Celosia | Mar 18 | Apr 29 | Apr 29 | — | Jul 1 – Oct 21 | 60–90 |
| Columbine | Feb 18 | Apr 29 | Apr 29 | — | Jun 24 – Jul 29 | 70–100 |
| Coreopsis | Feb 18 | Apr 22 | Apr 29 | — | Jul 8 – Nov 4 | 60–80 |
| Cosmos | Mar 25 | Apr 22 | Apr 22 | — | Jul 1 – Oct 14 | 60–90 |
| Crocus | — | — | — | Sep 9 | Jul 29 – Aug 19 | 10–20 |
| Daffodils | — | — | — | Sep 9 | Aug 5 – Aug 26 | 20–40 |
| Dahlias | Mar 25 | Apr 29 | Apr 29 | — | Jul 15 – Nov 4 | 70–120 |
| Daylily | Feb 18 | — | Apr 29 | — | Jul 15 – Nov 4 | 60–90 |
| Dianthus | Feb 25 | Mar 25 | Apr 1 | — | May 20 – Aug 19 | 60–80 |
| Echinacea (Purple Coneflower) | Feb 18 | Apr 29 | Apr 29 | — | Jul 15 – Nov 4 | 70–90 |
| Foxglove | Feb 18 | Apr 29 | Apr 29 | — | Jun 24 – Jul 29 | 80–120 |
| Gaillardia (Blanket Flower) | Mar 4 | Apr 29 | Apr 29 | — | Jul 8 – Nov 11 | 70–100 |
| Geraniums | Feb 11 | — | Apr 29 | — | Jul 8 – Oct 14 | 70–100 |
| Gladiolus | — | Apr 22 | Apr 22 | — | Jul 8 – Oct 28 | 70–100 |
| Hostas | Feb 11 | — | Apr 29 | — | Jul 15 – Nov 4 | 60–90 |
| Hyacinths | — | — | — | Sep 9 | Aug 26 – Sep 16 | 14–28 |
| Hydrangeas | Feb 11 | — | Apr 29 | — | Jul 8 – Oct 21 | 90–150 |
| Impatiens | Feb 25 | — | Apr 29 | — | Jul 8 – Oct 21 | 60–75 |
| Irises | — | Division | Apr 29 | — | Jun 24 – Jul 22 | 60–100 |
| Larkspur | — | Mar 25 | — | — | Jun 3 – Jul 29 | 60–90 |
| Lavender | Feb 11 | — | May 6 | — | Jul 15 – Sep 9 | 90–120 |
| Lilies | — | Division | Apr 29 | — | Jul 8 – Oct 14 | 70–120 |
| Lobelia | Feb 18 | — | Apr 8 | — | Jun 3 – Aug 26 | 70–80 |
| Lupine | Feb 18 | Apr 29 | Apr 29 | — | Jun 24 – Jul 29 | 75–100 |
| Marigolds | Mar 11 | Apr 22 | Apr 22 | — | Jun 17 – Sep 23 | 50–70 |
| Nasturtium | Mar 25 | Apr 22 | Apr 22 | — | Jun 17 – Oct 14 | 55–65 |
| Pansy | Feb 11 | — | Apr 22 | Aug 26 | Jun 17 – Aug 26 | 70–90 |
| Peonies | — | Division | Apr 29 | — | Jul 1 – Aug 5 | 90–120 |
| Petunia | Feb 25 | — | Apr 29 | — | Jul 8 – Oct 21 | 70–90 |
| Phlox | Feb 18 | Apr 29 | Apr 29 | — | Jul 8 – Sep 30 | 80–110 |
| Portulaca | Mar 18 | Apr 29 | Apr 29 | — | Jun 17 – Oct 7 | 50–70 |
| Ranunculus | Mar 11 | — | Apr 22 | — | May 27 – Jun 24 | 90–120 |
| Roses | Feb 11 | — | Apr 29 | — | Jul 8 – Nov 4 | 90–180 |
| Salvia | Feb 18 | — | Apr 22 | — | Jul 1 – Oct 14 | 70–90 |
| Sedum (Stonecrop) | Feb 18 | — | Apr 29 | — | Aug 19 – Nov 11 | 60–90 |
| Snapdragon | Feb 11 | Apr 1 | Apr 22 | — | Jul 1 – Sep 16 | 70–100 |
| Sunflower | Apr 1 | Apr 22 | Apr 22 | — | Jul 15 – Oct 14 | 70–100 |
| Sweet Alyssum | Mar 11 | Apr 1 | Apr 22 | — | Jun 3 – Aug 19 | 45–60 |
| Sweet Pea | Mar 11 | Mar 18 | Apr 22 | — | Jul 8 – Sep 16 | 65–85 |
| Tulips | — | — | — | Sep 16 | Aug 26 – Sep 23 | 15–30 |
| Vinca (Annual) | Feb 11 | — | Apr 29 | — | Jul 8 – Oct 21 | 70–90 |
| Yarrow | Feb 18 | Apr 22 | Apr 29 | — | Jul 8 – Nov 4 | 60–90 |
| Zinnia | Mar 25 | Apr 22 | Apr 22 | — | Jul 1 – Oct 7 | 60–70 |
Monthly Planting Guide for Highland County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Highland County.
Frequently Asked Questions
What planting zone is Highland County, OH?
Highland County is in USDA Hardiness Zone 6b. 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 Highland County, OH?
Based on 31 years of NOAA weather station data, the median last spring frost in Highland County falls around April 22. In 8 out of 10 years, last frost lands between April 7 and May 6 — a 29-day window of variability. Use May 6 as your conservative safe-to-plant date for frost-sensitive crops.
When is the first fall frost in Highland County, OH?
The median first fall frost in Highland County arrives around October 21. In cold years it can arrive as early as October 7; in mild years as late as November 2. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in Highland County?
Highland County has a frost-free growing season of approximately 182 days. This is enough time for most warm-season crops including tomatoes, peppers, and squash with proper timing. Climate records show the growing season is trending shorter by about 1.98 days per decade.
What is the soil like in Highland County for gardening?
Highland County has predominantly Silt Loam soil with a pH range of 5.8–7.1 and Well Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.
What is grown commercially in Highland County?
Highland County has commercial agriculture that includes Soybeans, Corn, Hay, Hogs. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.
Is Highland County a good location for home gardening?
Highland County scores 61/100 (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 Highland County Garden Planner — Free
A 22-page printable planner built for Highland County (Zone 6b). 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