Johnston County, NC — Planting Guide
Your May game plan for Johnston County, North Carolina
Each item below is timed to Johnston County, North Carolina's frost dates and soil temperatures. Skip nothing, stress about nothing.
-
Get basil, cucumber, and kale seeds going inside
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.
-
Start harvesting carrots, kale, and lettuce
Taste as you pick. The first ripe produce is the best feedback loop you'll get all season.
Before June arrives, get these ready
- Starting indoors: peppers, eggplant, and hot peppers
- First harvests: basil, carrots, and cucumber
Johnston County is in USDA Zone 8a. The average last spring frost is April 3 and the first fall frost is November 3, giving you a growing season of approximately 214 days.
At an elevation of 1,120 ft, Johnston County receives approximately 49.4 in of rainfall annually. Summer highs average 92°F with winter lows around 32°F. The predominant soil type is Clay Loam.
Based on 31 years of NOAA climate station data, the last frost date here varies by 43 days year to year — ranging from March 16 in warm years to April 28 in cold years. The growing season is trending longer by about 1.98 days per decade. Johnston County scores 54/100 (Moderate) on the Microclimate Index.
🌡️ Zone
8a (°F to °F min)
❄️ Last Frost
April 3
🍂 First Frost
November 3
📅 Growing Season
214 days
⛰️ Elevation
1,120 ft
🌧️ Annual Rainfall
49.4 in
Monthly Watering Calendar
When you'll need to water your garden — based on average monthly rainfall vs. the ~1 inch/week most gardens need.
View detailed monthly data
| Month | Avg Rainfall | Rainy Days | Extra Water Needed | Watering Effort |
|---|---|---|---|---|
| Jan | 4.4 in | 11 days | — | None |
| Feb | 4.4 in | 9 days | — | None |
| Mar | 5.3 in | 8 days | — | Low |
| Apr | 4.1 in | 8 days | 0.2 in | Low |
| May | 3.3 in | 8 days | 1 in | Moderate |
| Jun | 4.4 in | 11 days | — | Low |
| Jul | 4.4 in | 11 days | — | Low |
| Aug | 4.1 in | 10 days | 0.2 in | Low |
| Sep | 4.2 in | 7 days | 0.1 in | Low |
| Oct | 2.7 in | 6 days | 1.6 in | High |
| Nov | 3.9 in | 7 days | — | None |
| Dec | 4.2 in | 9 days | — | None |
Annual total: 49.4 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.
Johnston County Soil Profile
Soil Type
Clay Loam
Soil pH
5.6-6.7
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 28 | Nov 17 | 203 days |
| Cautious | Apr 10 | Nov 8 | 212 days |
| Average year | Apr 3 | Nov 3 | 214 days |
| Optimistic | Mar 27 | Oct 27 | 214 days |
| Aggressive (risky) | Mar 16 | Oct 14 | 212 days |
Not very — frost dates can vary by ±43 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 days per decade). Spring is arriving earlier than it used to. Good news for gardeners.
Gardening Difficulty Score
Johnston County presents some gardening challenges. Choose adapted varieties and plan around frost dates.
Local Gardening Help in Johnston 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 Johnston County's climate and soil.
County Extension Office
Johnston County NC State Extension Extension Office
Phone: 919-515-3113
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 Johnston County
Finding local nurseries & garden centers in Johnston County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Johnston 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 Johnston County NC" or "garden center Johnston 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 Johnston County NC" or check your extension office and local parks department. Facebook groups like "Johnston County Gardeners" or "North Carolina 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
Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.
Longest Day
14.4 hours
Summer solstice daylight
Shortest Day
9.6 hours
Winter solstice daylight
Peak Sun Hours
9 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: Day-neutral onion varieties like Candy, Cabernet, and Sierra Blanca perform best in your day-length range.
View detailed monthly data
| Month | Daylight Hours | Peak Sun Hours | Day Length |
|---|---|---|---|
| January | 9.9 hr | 5.1 hr | Short day |
| February | 10.7 hr | 5.8 hr | Short day |
| March | 11.7 hr | 6.7 hr | Short day |
| April | 12.9 hr | 7.8 hr | Neutral |
| May | 13.9 hr | 9 hr | Neutral |
| June | 14.4 hr | 8 hr | Long day |
| July | 14.2 hr | 8.1 hr | Long day |
| August | 13.3 hr | 7.5 hr | Neutral |
| September | 12.2 hr | 6.7 hr | Neutral |
| October | 11.1 hr | 6.9 hr | Short day |
| November | 10.1 hr | 5.6 hr | Short day |
| December | 9.6 hr | 4.6 hr | Short day |
Peak sun hours factor in typical cloud cover — use these for solar panel and shade-planning calculations.
Soil Temperature & Composting Calendar
Monthly soil temps tell you when to plant warm-season crops, and when your compost pile is actively working.
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 | 40°F | 45°F | 🐢 Slow | ~24 weeks |
| Mar | 48°F | 47°F | 🐢 Slow | ~24 weeks |
| Apr | 59°F | 57°F | ♻️ Active | ~14 weeks |
| May | 66°F | 65°F | 🔥 Peak | ~8 weeks |
| Jun | 78°F | 74°F | 🔥 Peak | ~8 weeks |
| Jul | 84°F | 79°F | 🔥 Peak | ~8 weeks |
| Aug | 85°F | 82°F | 🔥 Peak | ~8 weeks |
| Sep | 82°F | 78°F | 🔥 Peak | ~8 weeks |
| Oct | 67°F | 71°F | 🔥 Peak | ~8 weeks |
| Nov | 56°F | 60°F | ♻️ Active | ~14 weeks |
| Dec | 45°F | 52°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 Johnston County
Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.
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 | High | Mar, Apr, May, Jun, Jul, Aug, Sep, Oct |
| Japanese beetles | Moderate | Jun, Jul, Aug |
| Squash vine borers | High | May, Jun, Jul |
| Stink bugs | Moderate | May, Jun, Jul, Aug, Sep |
| Whiteflies | Moderate | 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 Johnston County
Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with county-specific planting dates.
Spring Cover Crops (4 options) — Build soil before the main growing season
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Buckwheat | Apr 7 | Sep 8 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Cowpeas (southern peas) | Apr 9 | Sep 8 | ✓ Yes | Excellent nitrogen fixer for warm climates, edible |
| Sorghum-sudan grass | Apr 10 | Sep 8 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | Mar 8 | 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 28 | 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 4 | Mar 20 | ✓ Yes | Fixes nitrogen, good for heavy clay soils |
| Crimson clover | Sep 3 | Mar 20 | ✓ Yes | Fixes nitrogen, attracts pollinators in spring |
| Daikon radish | Sep 20 | Mar 20 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Aug 15 | Mar 20 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Sep 26 | Mar 20 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Aug 13 | Mar 13 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Aug 1 | Mar 13 | — | Erosion control, weed suppression, good biomass |
Wind & Microclimate
Wind dries soil, stresses plants, and affects frost patterns. Understanding your exposure helps with garden placement.
Seasonal Wind Speed
Spring: 12 mph Summer: 9 mph
Fall: 9 mph Winter: 11 mph
Prevailing wind: SW. Moderate wind — consider a temporary windbreak for young seedlings.
Windbreak Benefit
5.4/10
Moderately beneficial — a simple fence or trellis can protect delicate crops from wind stress.
Frost Pocket Risk
Low
Relatively flat terrain (203 ft range). Frost pocket risk is minimal — garden placement is flexible.
Rainwater Harvesting Potential
How much water you can collect, when to collect it, and what size system you need for your garden.
Annual Collection
24,620 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
Jan, Feb, Mar, Jun
Highest rainfall months — your barrels will fill up quickly during these months.
Months to Draw From Storage
May, Oct, Nov
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 49.4 inches of rain per year
- A 1,000 sq ft roof can collect roughly 24,620 gallons annually
- Rainwater harvesting is fully legal in your state
- Stock up on stored water before your dry season (May, Oct, Nov)
- Use a first-flush diverter to keep roof debris out of your collection
Soil & Growing Conditions in Johnston County
Soil Type
Clay Loam
Soil pH 5.6–6.7 · Somewhat Poorly Drained drainage
Raised beds strongly recommended here — native soil drainage or texture limits in-ground options.
Watering Needs
Drought stress: 3.5/10
Low-to-moderate drought stress. Plan to water 1–2 times per week during peak summer. (49.4 in. annual rainfall)
Season Tips
214-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 24-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
Cedar raised bed kit — ideal for poor soil, clay, or small-space gardening.
Improve drainage and aeration in heavy clay soils with horticultural perlite.
Premium blend of topsoil, compost, and perlite formulated for raised beds.
🥬 Vegetables to Grow in Johnston County
115 vegetables that grow well in Zone 8a with planting dates for Johnston County.
Show all 115 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | 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 | May 8 – Jul 10 | 30–50 |
| Asparagus | — | — | Apr 17 | — | 730–1095 |
| Beets | — | Mar 20 | — | May 15 – Jun 12 | 50–70 |
| Belgian Endive | Feb 27 | Mar 20 | Apr 3 | 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 | May 15 – Jun 19 | 40–60 |
| Broccoli | Feb 27 | Mar 20 | Apr 3 | Jun 5 – Jul 17 | 60–90 |
| Broccoli Rabe | Feb 27 | Mar 20 | Apr 3 | May 15 – Jun 19 | 40–60 |
| Brussels Sprouts | Feb 27 | Mar 20 | Apr 3 | 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 | 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 | — | May 22 – Jun 26 | 60–80 |
| Cauliflower | Feb 27 | Mar 20 | Apr 3 | May 29 – Jul 31 | 55–100 |
| Celeriac | Feb 27 | Mar 20 | Apr 3 | Jul 17 – Aug 21 | 100–120 |
| Celery | Feb 27 | Mar 20 | Apr 3 | Jun 26 – Aug 21 | 80–120 |
| Celtuce | Feb 27 | Mar 20 | Apr 3 | Jun 5 – Jul 17 | 60–90 |
| Chard | Feb 27 | Mar 20 | Apr 3 | 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 | Jun 26 – Aug 7 | 80–110 |
| Chicory | Feb 27 | Mar 20 | Apr 3 | Jun 5 – Jul 17 | 60–85 |
| Chinese Cabbage | Feb 27 | Mar 20 | Apr 3 | 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 | 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 | Apr 17 – May 8 | 14–21 |
| Crookneck Squash | Mar 6 | Apr 10 | Apr 17 | Jun 5 – Jul 3 | 45–60 |
| Crosne | — | Mar 20 | — | Aug 21 – Oct 23 | 150–200 |
| Cucumber | Mar 6 | Apr 10 | Apr 17 | Jun 12 – Aug 7 | 50–70 |
| Daikon | — | Mar 20 | — | 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 | May 22 – Jun 26 | 45–65 |
| Escarole | Feb 27 | Mar 20 | Apr 3 | May 29 – Jun 26 | 50–70 |
| Fava Beans | Feb 27 | Mar 20 | Apr 3 | Jun 19 – Jul 31 | 75–100 |
| Fennel | Feb 13 | Apr 10 | Apr 17 | Jun 19 – Jul 31 | 60–90 |
| Garlic | — | — | — | — | 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 | May 22 – Jun 19 | 45–60 |
| Kale | Feb 27 | Mar 20 | Apr 3 | May 29 – Jul 24 | 50–70 |
| Kidney Beans | — | Apr 10 | — | Jul 10 – Aug 14 | 85–110 |
| Kohlrabi | Feb 27 | Mar 20 | Apr 3 | May 22 – Jun 26 | 45–65 |
| Komatsuna | Feb 27 | Mar 20 | Apr 3 | May 8 – Jun 12 | 35–50 |
| Leeks | Feb 27 | Mar 20 | Apr 3 | Jul 3 – Sep 18 | 90–150 |
| Lentils | Feb 27 | Mar 20 | Apr 3 | Jun 26 – Aug 7 | 80–110 |
| Lettuce | Feb 27 | Mar 20 | Apr 3 | 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 | 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 | Apr 10 – May 8 | 7–21 |
| Mitsuba | Feb 27 | Mar 20 | Mar 27 | May 22 – Jul 17 | 50–70 |
| Mizuna | Feb 27 | Mar 20 | Apr 3 | May 8 – Jun 5 | 30–45 |
| Mustard Greens | Feb 27 | Mar 20 | Apr 3 | May 8 – Jul 10 | 30–50 |
| Napa Cabbage | Feb 27 | Mar 20 | Apr 3 | 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 | Jul 3 – Aug 21 | 90–120 |
| Pac Choi | Feb 27 | Mar 20 | Apr 3 | May 15 – Jun 12 | 40–55 |
| Parsnip | — | Mar 20 | — | 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 | 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 | May 15 – Jun 19 | 40–60 |
| Radicchio | Feb 27 | Mar 20 | Apr 3 | Jun 5 – Jul 10 | 60–80 |
| Radish | — | Mar 20 | — | Apr 17 – May 8 | 22–35 |
| Rhubarb | — | — | Apr 24 | — | 365–730 |
| Romanesco | Feb 27 | Mar 20 | Apr 3 | Jun 19 – Jul 31 | 75–100 |
| Rutabaga | — | Mar 20 | — | Jun 12 – Jul 17 | 80–100 |
| Salsify | — | Mar 20 | — | Jul 3 – Aug 14 | 100–130 |
| Savoy Cabbage | Feb 27 | Mar 20 | Apr 3 | Jun 12 – Aug 7 | 70–110 |
| Scallions | Feb 27 | Mar 20 | Apr 3 | 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 | 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 | 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 | 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 |
| Sunflower | Feb 13 | Apr 10 | Apr 17 | Jun 26 – Aug 14 | 70–100 |
| 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 | 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 | — | May 1 – Jun 5 | 40–60 |
| Watercress | Feb 27 | Mar 20 | Apr 3 | 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 Johnston County
27 fruits that grow well in Zone 8a with planting dates for Johnston County.
Show all 27 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | 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 Johnston County
42 herbs that grow well in Zone 8a with planting dates for Johnston County.
Show all 42 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Angelica | Feb 27 | Mar 20 | Mar 27 | — | 365–730 |
| Anise | Feb 27 | Mar 20 | Mar 27 | 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 | May 22 – Jul 10 | 50–60 |
| Caraway | Feb 27 | Mar 20 | Mar 27 | — | 365–450 |
| Catnip | — | — | Apr 10 | Jun 12 – Aug 14 | 60–80 |
| Chamomile | Feb 27 | Mar 20 | Mar 27 | May 29 – Aug 7 | 60–90 |
| Chervil | Feb 27 | Mar 20 | Mar 27 | May 8 – Jul 10 | 40–60 |
| Chives | — | — | Apr 10 | Jun 12 – Aug 21 | 60–90 |
| Cilantro | Feb 27 | Mar 20 | Mar 27 | May 8 – Jul 10 | 40–60 |
| Comfrey | — | — | Apr 10 | Jun 12 – Aug 21 | 60–90 |
| Cumin | Feb 27 | Mar 20 | Mar 27 | Jul 10 – Sep 11 | 100–120 |
| Dill | Feb 27 | Mar 20 | Mar 27 | May 8 – Jul 10 | 40–60 |
| Echinacea | — | — | Apr 10 | Aug 14 – Nov 20 | 120–180 |
| Epazote | Feb 13 | Apr 10 | Apr 17 | Jun 5 – Jul 31 | 45–60 |
| Fennel (herb) | Feb 27 | Mar 20 | Mar 27 | 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 |
| Lavender | — | — | Apr 10 | Jul 10 – Dec 11 | 90–200 |
| 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 | 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 | 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 |
| Yarrow | — | — | Apr 10 | Jul 10 – Sep 25 | 90–120 |
Monthly Planting Guide for Johnston County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Johnston County.
Frequently Asked Questions
What planting zone is Johnston County, NC?
Johnston County is in USDA Hardiness Zone 8a. 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 Johnston County, NC?
Based on 31 years of NOAA weather station data, the median last spring frost in Johnston County falls around April 3. In 8 out of 10 years, last frost lands between March 16 and April 28 — a 43-day window of variability. Use April 28 as your conservative safe-to-plant date for frost-sensitive crops.
When is the first fall frost in Johnston County, NC?
The median first fall frost in Johnston County arrives around November 3. In cold years it can arrive as early as October 14; in mild years as late as November 17. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in Johnston County?
Johnston County has a frost-free growing season of approximately 214 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 1.98 days per decade.
What is the soil like in Johnston County for gardening?
Johnston County has predominantly Clay Loam soil with a pH range of 5.6–6.7 and Somewhat Poorly Drained drainage. The native soil conditions make raised beds a particularly good investment here — they let you control drainage and fertility independent of the ground soil.
What is grown commercially in Johnston County?
Johnston County has commercial agriculture that includes Poultry, Soybeans, Corn, Cotton, Tobacco. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.
Is Johnston County a good location for home gardening?
Johnston County scores 54/100 (Moderate) 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 Johnston County Garden Planner — Free
A 24-page printable planner built for Johnston 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