Decatur County, TN — Planting Guide
Decatur County is in USDA Zone 7b. The average last spring frost is April 5 and the first fall frost is October 27, giving you a growing season of approximately 205 days.
At an elevation of 1,168 ft, Decatur County receives approximately 55 in of rainfall annually. Summer highs average 90°F with winter lows around 28°F. The predominant soil type is Silt Loam.
Based on 31 years of NOAA climate station data, the last frost date here varies by 32 days year to year — ranging from March 20 in warm years to April 21 in cold years. The growing season is trending longer by about 2.66 days per decade. Decatur County scores 52/100 (Moderate) on the Microclimate Index.
🌡️ Zone
7b (5°F to 10°F min)
❄️ Last Frost
April 5
🍂 First Frost
October 27
📅 Growing Season
205 days
⛰️ Elevation
1,168 ft
🌧️ Annual Rainfall
55 in
Monthly Watering Calendar for Decatur County
When you'll need to water your garden — based on average monthly rainfall vs. the ~1 inch/week most gardens need.
What this means for you: In Decatur 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 55" annual rainfall is just the starting context.
View detailed monthly data
| Month | Avg Rainfall | Rainy Days | Extra Water Needed | Watering Effort |
|---|---|---|---|---|
| Jan | 4.2 in | 8 days | — | None |
| Feb | 4 in | 8 days | — | None |
| Mar | 4.6 in | 10 days | — | Low |
| Apr | 4.5 in | 6 days | — | Low |
| May | 4.5 in | 9 days | — | Low |
| Jun | 5.4 in | 12 days | — | Low |
| Jul | 6.5 in | 11 days | — | Low |
| Aug | 5.6 in | 11 days | — | Low |
| Sep | 3.6 in | 6 days | 0.7 in | Moderate |
| Oct | 3.1 in | 7 days | 1.2 in | Moderate |
| Nov | 4 in | 8 days | — | None |
| Dec | 4.9 in | 10 days | — | None |
Annual total: 54.9 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.
Decatur County Soil Profile
Soil Type
Silt Loam
Soil pH
5.3-6.5
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 21 | Nov 13 | 206 days |
| Cautious | Apr 14 | Nov 1 | 201 days |
| Average year | Apr 5 | Oct 27 | 205 days |
| Optimistic | Mar 28 | Oct 20 | 206 days |
| Aggressive (risky) | Mar 20 | Oct 12 | 206 days |
Not very — frost dates can vary by ±32 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 2.7 days per decade). Spring is arriving earlier than it used to. Good news for gardeners.
Gardening Difficulty Score
Decatur County presents some gardening challenges. Choose adapted varieties and plan around frost dates.
Local Gardening Help in Decatur 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 Decatur County's climate and soil.
County Extension Office
Decatur County University of Tennessee Extension Extension Office
Phone: 865-974-7114
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 Decatur County
Finding local nurseries & garden centers in Decatur County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Decatur 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 Decatur County TN" or "garden center Decatur 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 Decatur County TN" or check your extension office and local parks department. Facebook groups like "Decatur County Gardeners" or "Tennessee 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 Decatur County
Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.
The practical takeaway: Onion varieties are sold by "short-day," "intermediate-day," and "long-day." Decatur County's latitude determines which to buy — and getting it wrong is the difference between baseball-sized bulbs and marbles.
Longest Day
14.4 hours
Summer solstice daylight
Shortest Day
9.6 hours
Winter solstice daylight
Peak Sun Hours
8.4 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 | 9.8 hr | 4.7 hr | Short day |
| February | 10.7 hr | 5.3 hr | Short day |
| March | 11.7 hr | 6.2 hr | Short day |
| April | 12.9 hr | 7.6 hr | Neutral |
| May | 13.9 hr | 8.2 hr | Neutral |
| June | 14.4 hr | 8.4 hr | Long day |
| July | 14.2 hr | 8 hr | Long day |
| August | 13.3 hr | 7 hr | Neutral |
| September | 12.2 hr | 7.1 hr | Neutral |
| October | 11.1 hr | 7 hr | Short day |
| November | 10.1 hr | 5.7 hr | Short day |
| December | 9.6 hr | 4.8 hr | Short day |
Peak sun hours factor in typical cloud cover — use these for solar panel and shade-planning calculations.
Soil Temperature & Composting in Decatur County
Monthly soil temps tell you when to plant warm-season crops, and when your compost pile is actively working.
Why this matters: Most root crops germinate well at 50-60°F. Most fruit-bearing crops want 65-75°F. Decatur County's monthly soil curve maps these windows to actual months.
Plant Warm Crops When
Soil reaches 60°F+
Soil warm enough from May through Oct.
Best Month to Compost
May
Microbial activity peaks when soil is warm.
Active Composting
8 months
Nearly year-round composting.
View detailed monthly data
| Month | Soil 4" Deep | Soil 8" Deep | Compost Activity | Time to Finish |
|---|---|---|---|---|
| Jan | 37°F | 44°F | ❄️ Dormant | ~36 weeks |
| Feb | 37°F | 44°F | ❄️ Dormant | ~36 weeks |
| Mar | 44°F | 49°F | 🐢 Slow | ~24 weeks |
| Apr | 58°F | 55°F | ♻️ Active | ~14 weeks |
| May | 68°F | 65°F | 🔥 Peak | ~8 weeks |
| Jun | 79°F | 74°F | 🔥 Peak | ~8 weeks |
| Jul | 87°F | 79°F | 🔥 Peak | ~8 weeks |
| Aug | 87°F | 82°F | 🔥 Peak | ~8 weeks |
| Sep | 78°F | 78°F | 🔥 Peak | ~8 weeks |
| Oct | 67°F | 72°F | 🔥 Peak | ~8 weeks |
| Nov | 55°F | 61°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 Decatur County
Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.
Quick context: High pest pressure means weekly inspection. Low pest pressure means monthly. The score tells you which routine to set up before you have a problem.
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 | High | May, Jun, Jul, Aug, Sep |
| Whiteflies | Moderate | 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 Decatur County
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 Decatur County 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 13 | Sep 1 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Cowpeas (southern peas) | Apr 9 | Sep 1 | ✓ Yes | Excellent nitrogen fixer for warm climates, edible |
| Sorghum-sudan grass | Apr 7 | Aug 18 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | Mar 7 | Sep 1 | ✓ 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 5 | Oct 13 | — | 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 17 | Mar 22 | ✓ Yes | Fixes nitrogen, good for heavy clay soils |
| Crimson clover | Aug 23 | Mar 22 | ✓ Yes | Fixes nitrogen, attracts pollinators in spring |
| Daikon radish | Sep 2 | Mar 22 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Aug 17 | Mar 15 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Oct 1 | Mar 15 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Aug 3 | Mar 15 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Jul 30 | Mar 22 | — | Erosion control, weed suppression, good biomass |
Wind & Microclimate in Decatur County
What this means for you: Wind is the silent water thief. Every breeze pulls moisture from leaves and soil. Decatur County's 6.2 mph average is one piece of the watering math: rainfall + irrigation must exceed evaporation + transpiration, and wind boosts both losses.
Wind dries soil, stresses plants, and affects frost patterns. Understanding your exposure helps with garden placement.
Seasonal Wind Speed
Spring: 8 mph Summer: 6 mph
Fall: 7 mph Winter: 9 mph
Prevailing wind: SW. Low wind — no windbreak needed for most crops.
Windbreak Benefit
2.6/10
Low need — wind is not a major factor in your garden planning.
Frost Pocket Risk
Moderate
Some terrain variation (405 ft range). Garden on slopes or higher ground if possible to avoid late-season frost pockets.
Rainwater Harvesting in Decatur County
How much water you can collect, when to collect it, and what size system you need for your garden.
Why this matters: A gravity-fed rain barrel ($75) is the easy entry. A larger cistern ($500-1500) covers a whole growing season. Decatur County's 55" annual rainfall determines whether the larger system is overkill or essential.
Annual Collection
27,362 gal
Per 1,000 sq ft of roof area (at 80% collection efficiency)
Recommended Setup
6 rain barrels (55 gal each)
For a typical 500 sq ft garden. Serious collectors: consider a 500 gal tank.
Legal Status
Unrestricted
Rainwater harvesting is fully legal in your state with no restrictions.
Best Collection Months
Jun, Jul, Aug, Dec
Highest rainfall months — your barrels will fill up quickly during these months.
Months to Draw From Storage
Sep, 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 54.9 inches of rain per year
- A 1,000 sq ft roof can collect roughly 27,362 gallons annually
- Rainwater harvesting is fully legal in your state
- Your area gets ample rainfall — even small barrels make a big difference
- Consider a rain garden to handle overflow during heavy rainfall months
Soil & Growing Conditions in Decatur County
Soil Type
Silt Loam
Soil pH 5.3–6.5 · Moderately Well Drained drainage
Native soil is well-suited to most vegetables and herbs with regular compost additions.
Watering Needs
Drought stress: 3.5/10
Low-to-moderate drought stress. Plan to water 1–2 times per week during peak summer. (55 in. annual rainfall)
Season Tips
205-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 Decatur County
112 vegetables that grow well in Zone 7b with planting dates for Decatur County.
Show all 112 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Acorn Squash | Mar 8 | Apr 12 | Apr 19 | — | Jul 12 – Aug 16 | 80–100 |
| Amaranth | Feb 15 | Apr 12 | Apr 19 | — | Jul 19 – Sep 6 | 90–120 |
| Artichoke | — | — | Apr 19 | — | Aug 23 – Nov 1 | 120–180 |
| Arugula | Mar 1 | Mar 22 | Apr 5 | Aug 18 | May 10 – Jul 12 | 30–50 |
| Asparagus | — | — | Apr 19 | — | — | 730–1095 |
| Beets | — | Mar 22 | — | Aug 18 | May 17 – Jun 14 | 50–70 |
| Belgian Endive | Mar 1 | Mar 22 | Apr 5 | Aug 18 | Jul 26 – Sep 20 | 110–150 |
| Bitter Melon | Feb 15 | Apr 12 | Apr 19 | — | Jun 21 – Aug 2 | 60–90 |
| Black Beans | — | Apr 12 | — | — | Jul 12 – Aug 30 | 90–120 |
| Bok Choy | Mar 1 | Mar 22 | Apr 5 | Aug 18 | May 17 – Jun 21 | 40–60 |
| Broccoli | Mar 1 | Mar 22 | Apr 5 | Aug 18 | Jun 7 – Jul 19 | 60–90 |
| Broccoli Rabe | Mar 1 | Mar 22 | Apr 5 | Aug 18 | May 17 – Jun 21 | 40–60 |
| Brussels Sprouts | Mar 1 | Mar 22 | Apr 5 | Aug 18 | Jul 5 – Aug 30 | 90–130 |
| Butternut Squash | Mar 8 | Apr 12 | Apr 19 | — | Jul 19 – Aug 23 | 85–110 |
| Cabbage | Mar 1 | Mar 22 | Apr 5 | Aug 18 | Jun 7 – Aug 2 | 60–100 |
| Calabash | Feb 15 | Apr 12 | Apr 19 | — | Jul 12 – Sep 6 | 80–120 |
| Cardoon | — | — | Apr 19 | — | Aug 23 – Oct 4 | 120–150 |
| Carrots | — | Mar 22 | — | Aug 18 | May 24 – Jun 28 | 60–80 |
| Cauliflower | Mar 1 | Mar 22 | Apr 5 | Aug 18 | May 31 – Aug 2 | 55–100 |
| Celeriac | Mar 1 | Mar 22 | Apr 5 | Aug 18 | Jul 19 – Aug 23 | 100–120 |
| Celery | Mar 1 | Mar 22 | Apr 5 | Aug 18 | Jun 28 – Aug 23 | 80–120 |
| Celtuce | Mar 1 | Mar 22 | Apr 5 | Aug 18 | Jun 7 – Jul 19 | 60–90 |
| Chard | Mar 1 | Mar 22 | Apr 5 | Aug 18 | May 31 – Jul 19 | 50–60 |
| Chayote | Feb 15 | Apr 12 | Apr 19 | — | Aug 23 – Nov 1 | 120–180 |
| Chickpeas | Mar 1 | Mar 22 | Apr 5 | Aug 18 | Jun 28 – Aug 9 | 80–110 |
| Chicory | Mar 1 | Mar 22 | Apr 5 | Aug 18 | Jun 7 – Jul 19 | 60–85 |
| Chinese Cabbage | Mar 1 | Mar 22 | Apr 5 | Aug 18 | May 31 – Jun 28 | 50–70 |
| Christmas Lima Beans | Feb 15 | Apr 12 | Apr 19 | — | Jul 12 – Aug 16 | 80–100 |
| Collard Greens | Mar 1 | Mar 22 | Apr 5 | Aug 18 | May 31 – Aug 2 | 55–75 |
| Corn | — | Apr 12 | — | — | Jun 14 – Aug 9 | 60–100 |
| Cowpeas | — | Apr 12 | — | — | Jun 14 – Jul 26 | 60–90 |
| Cress | Mar 1 | Mar 22 | Apr 5 | Aug 18 | Apr 19 – May 10 | 14–21 |
| Crookneck Squash | Mar 8 | Apr 12 | Apr 19 | — | Jun 7 – Jul 5 | 45–60 |
| Crosne | — | Mar 22 | — | Aug 18 | Aug 23 – Oct 25 | 150–200 |
| Cucumber | Mar 8 | Apr 12 | Apr 19 | — | Jun 14 – Aug 9 | 50–70 |
| Daikon | — | Mar 22 | — | Aug 18 | May 17 – Jun 14 | 50–70 |
| Delicata Squash | Mar 8 | Apr 12 | Apr 19 | — | Jul 12 – Aug 16 | 80–100 |
| Edamame | — | Apr 12 | — | — | Jun 28 – Aug 9 | 75–100 |
| Eggplant | Feb 1 | Apr 12 | Apr 19 | — | Jun 28 – Aug 30 | 65–85 |
| Endive | Mar 1 | Mar 22 | Apr 5 | Aug 18 | May 24 – Jun 28 | 45–65 |
| Escarole | Mar 1 | Mar 22 | Apr 5 | Aug 18 | May 31 – Jun 28 | 50–70 |
| Fava Beans | Mar 1 | Mar 22 | Apr 5 | Aug 18 | Jun 21 – Aug 2 | 75–100 |
| Fennel | Feb 15 | Apr 12 | Apr 19 | — | Jun 21 – Aug 2 | 60–90 |
| Garlic | — | — | — | Sep 15 | Dec 15 – Apr 27 | 90–240 |
| Green Beans | — | Apr 12 | — | — | Jun 7 – Aug 2 | 50–65 |
| Horseradish | — | — | Apr 19 | — | Aug 23 – Nov 1 | 120–180 |
| Hot Peppers | Feb 1 | Apr 12 | Apr 19 | — | Jun 28 – Oct 4 | 70–120 |
| Hubbard Squash | Mar 8 | Apr 12 | Apr 19 | — | Aug 2 – Sep 6 | 100–120 |
| Jicama | Feb 15 | Apr 12 | Apr 19 | — | Aug 23 – Nov 1 | 120–180 |
| Kabocha | Mar 8 | Apr 12 | Apr 19 | — | Jul 19 – Aug 16 | 85–100 |
| Kai Lan | Mar 1 | Mar 22 | Apr 5 | Aug 18 | May 24 – Jun 21 | 45–60 |
| Kale | Mar 1 | Mar 22 | Apr 5 | Aug 18 | May 31 – Jul 26 | 50–70 |
| Kidney Beans | — | Apr 12 | — | — | Jul 12 – Aug 16 | 85–110 |
| Kohlrabi | Mar 1 | Mar 22 | Apr 5 | Aug 18 | May 24 – Jun 28 | 45–65 |
| Komatsuna | Mar 1 | Mar 22 | Apr 5 | Aug 18 | May 10 – Jun 14 | 35–50 |
| Leeks | Mar 1 | Mar 22 | Apr 5 | Aug 18 | Jul 5 – Sep 20 | 90–150 |
| Lentils | Mar 1 | Mar 22 | Apr 5 | Aug 18 | Jun 28 – Aug 9 | 80–110 |
| Lettuce | Mar 1 | Mar 22 | Apr 5 | Aug 18 | May 10 – Jul 19 | 30–60 |
| Lima Beans | — | Apr 12 | — | — | Jun 14 – Jul 26 | 60–90 |
| Loofah | Feb 15 | Apr 12 | Apr 19 | — | Aug 2 – Oct 4 | 100–150 |
| Luffa | Feb 15 | Apr 12 | Apr 19 | — | Jul 19 – Oct 4 | 90–150 |
| Mache | Mar 1 | Mar 22 | Apr 5 | Aug 18 | May 17 – Jun 21 | 40–60 |
| Malabar Spinach | Feb 15 | Apr 12 | Apr 19 | — | Jun 14 – Jul 12 | 55–70 |
| Melon | Mar 8 | Apr 12 | Apr 19 | — | Jun 28 – Aug 16 | 70–100 |
| Microgreens | Mar 1 | Mar 22 | Apr 5 | Aug 18 | Apr 12 – May 10 | 7–21 |
| Mitsuba | Mar 1 | Mar 22 | Mar 29 | Aug 18 | May 24 – Jul 19 | 50–70 |
| Mizuna | Mar 1 | Mar 22 | Apr 5 | Aug 18 | May 10 – Jun 7 | 30–45 |
| Mustard Greens | Mar 1 | Mar 22 | Apr 5 | Aug 18 | May 10 – Jul 12 | 30–50 |
| Napa Cabbage | Mar 1 | Mar 22 | Apr 5 | Aug 18 | May 31 – Jul 5 | 55–75 |
| New Zealand Spinach | Feb 15 | Apr 12 | Apr 19 | — | Jun 14 – Jul 12 | 55–70 |
| Okra | Feb 15 | Apr 12 | Apr 19 | — | Jun 14 – Aug 9 | 50–65 |
| Onion | Mar 1 | Mar 22 | Apr 5 | Aug 18 | Jul 5 – Aug 23 | 90–120 |
| Pac Choi | Mar 1 | Mar 22 | Apr 5 | Aug 18 | May 17 – Jun 14 | 40–55 |
| Parsnip | — | Mar 22 | — | Aug 18 | Jul 5 – Aug 16 | 100–130 |
| Patty Pan Squash | Mar 8 | Apr 12 | Apr 19 | — | Jun 7 – Jul 5 | 45–60 |
| Peas | Mar 1 | Mar 22 | Apr 5 | Aug 18 | May 31 – Jul 26 | 55–70 |
| Peppers | Feb 1 | Apr 12 | Apr 19 | — | Jun 21 – Aug 30 | 60–90 |
| Pole Beans | Feb 15 | Apr 12 | Apr 19 | — | Jun 14 – Aug 9 | 55–70 |
| Potatoes | Feb 15 | Apr 12 | Apr 19 | — | Jun 28 – Sep 6 | 70–120 |
| Pumpkin | Mar 8 | Apr 12 | Apr 19 | — | Jul 19 – Sep 6 | 85–120 |
| Purslane | Mar 1 | Mar 22 | Apr 5 | Aug 18 | May 17 – Jun 21 | 40–60 |
| Radicchio | Mar 1 | Mar 22 | Apr 5 | Aug 18 | Jun 7 – Jul 12 | 60–80 |
| Radish | — | Mar 22 | — | Aug 18 | Apr 19 – May 10 | 22–35 |
| Rhubarb | — | — | Apr 26 | — | — | 365–730 |
| Romanesco | Mar 1 | Mar 22 | Apr 5 | Aug 18 | Jun 21 – Aug 2 | 75–100 |
| Rutabaga | — | Mar 22 | — | Aug 18 | Jun 14 – Jul 19 | 80–100 |
| Salsify | — | Mar 22 | — | Aug 18 | Jul 5 – Aug 16 | 100–130 |
| Savoy Cabbage | Mar 1 | Mar 22 | Apr 5 | Aug 18 | Jun 14 – Aug 9 | 70–110 |
| Scallions | Mar 1 | Mar 22 | Apr 5 | Aug 18 | May 31 – Jun 28 | 50–70 |
| Scarlet Runner Beans | Feb 15 | Apr 12 | Apr 19 | — | Jun 21 – Jul 26 | 60–80 |
| Shallot | Mar 1 | Mar 22 | Apr 5 | Aug 18 | Jul 5 – Aug 23 | 90–120 |
| Shiso | Feb 15 | Apr 12 | Apr 19 | — | Jun 14 – Aug 9 | 50–70 |
| Snap Peas | Feb 15 | Apr 12 | Apr 19 | — | Jun 14 – Aug 9 | 55–70 |
| Snow Peas | Mar 1 | Mar 22 | Apr 5 | Aug 18 | May 31 – Jul 26 | 50–65 |
| Soybeans | — | Apr 12 | — | — | Jul 5 – Aug 30 | 80–120 |
| Spaghetti Squash | Mar 8 | Apr 12 | Apr 19 | — | Jul 19 – Aug 16 | 85–100 |
| Spinach | Mar 1 | Mar 22 | Apr 5 | Aug 18 | May 10 – Jul 12 | 35–50 |
| Squash (Summer) | Mar 8 | Apr 12 | Apr 19 | — | Jun 7 – Aug 9 | 45–65 |
| Squash (Winter) | Mar 8 | Apr 12 | Apr 19 | — | Jul 12 – Sep 6 | 80–120 |
| Sunchoke | — | — | Apr 19 | — | Aug 9 – Oct 4 | 110–150 |
| Sweet Corn | — | Apr 12 | — | — | Jun 14 – Jul 26 | 60–90 |
| Sweet Potatoes | Feb 15 | Apr 12 | Apr 19 | — | Jul 19 – Sep 6 | 90–120 |
| Tatsoi | Mar 1 | Mar 22 | Apr 5 | Aug 18 | May 10 – Jun 14 | 35–50 |
| Tomatillo | Feb 15 | Apr 12 | Apr 19 | — | Jun 21 – Aug 30 | 60–85 |
| Tomatoes | Feb 15 | Apr 12 | Apr 19 | — | Jun 21 – Aug 30 | 60–85 |
| Turnip | — | Mar 22 | — | Aug 18 | May 3 – Jun 7 | 40–60 |
| Watercress | Mar 1 | Mar 22 | Apr 5 | Aug 18 | May 17 – Jun 21 | 40–60 |
| Watermelon | Mar 8 | Apr 12 | Apr 19 | — | Jun 28 – Aug 16 | 70–100 |
| Wax Beans | — | Apr 12 | — | — | Jun 7 – Aug 2 | 50–65 |
| Winter Melon | Feb 15 | Apr 12 | Apr 19 | — | Jul 19 – Sep 6 | 90–120 |
| Yard Long Beans | Feb 15 | Apr 12 | Apr 19 | — | Jun 14 – Jul 26 | 55–80 |
| Zucchini | Mar 8 | Apr 12 | Apr 19 | — | Jun 7 – Aug 2 | 45–60 |
🍓 Fruits to Grow in Decatur County
31 fruits that grow well in Zone 7b with planting dates for Decatur County.
Show all 31 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Alpine Strawberries | — | — | Apr 26 | — | Jul 26 – Nov 8 | 90–180 |
| Aronia | — | — | Apr 26 | — | — | 730–1095 |
| Blackberries | — | — | Apr 26 | — | — | 365–730 |
| Blueberries | — | — | Apr 26 | — | — | 730–1095 |
| Boysenberries | — | — | Apr 26 | — | — | 365–730 |
| Cantaloupe | — | — | Apr 26 | — | Jul 5 – Aug 9 | 70–90 |
| Che Fruit | — | — | Apr 26 | — | — | 1095–1825 |
| Cranberries | — | — | Apr 26 | — | — | 730–1095 |
| Currants | — | — | Apr 26 | — | — | 730–1095 |
| Elderberries | — | — | Apr 26 | — | — | 730–1095 |
| Figs | — | — | Apr 26 | — | — | 730–1825 |
| Goji Berries | — | — | Apr 26 | — | — | 730–1095 |
| Gooseberries | — | — | Apr 26 | — | — | 730–1095 |
| Grapes | — | — | Apr 26 | — | — | 730–1095 |
| Ground Cherry | — | — | Apr 26 | — | Jul 5 – Aug 30 | 65–80 |
| Hardy Kiwi | — | — | Apr 26 | — | — | 1095–1825 |
| Haskaps | — | — | Apr 26 | — | — | 730–1095 |
| Honeydew | — | — | Apr 26 | — | Jul 19 – Aug 30 | 80–110 |
| Jostaberry | — | — | Apr 26 | — | — | 730–1095 |
| Kiwi | — | — | Apr 26 | — | — | 1095–1825 |
| Lingonberries | — | — | Apr 26 | — | — | 730–1095 |
| Loquat | — | — | Apr 26 | — | — | 730–1825 |
| Medlar | — | — | Apr 26 | — | — | 1095–1825 |
| Mulberries | — | — | Apr 26 | — | — | 730–1825 |
| Pawpaw | — | — | Apr 26 | — | — | 1095–2555 |
| Persimmon | — | — | Apr 26 | — | — | 1095–2555 |
| Pomegranate | — | — | Apr 26 | — | — | 730–1095 |
| Quince | — | — | Apr 26 | — | — | 1095–1825 |
| Raspberries | — | — | Apr 26 | — | — | 365–730 |
| Serviceberries | — | — | Apr 26 | — | — | 730–1095 |
| Strawberries | — | — | Apr 26 | — | Jul 26 – Dec 6 | 90–365 |
🌿 Herbs to Grow in Decatur County
36 herbs that grow well in Zone 7b with planting dates for Decatur County.
Show all 36 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Angelica | Mar 1 | Mar 22 | Mar 29 | Aug 18 | — | 365–730 |
| Anise | Mar 1 | Mar 22 | Mar 29 | Aug 18 | Jun 28 – Sep 13 | 90–120 |
| Basil | Feb 15 | Apr 12 | Apr 19 | — | Jun 14 – Aug 16 | 50–75 |
| Bee Balm | — | — | Apr 12 | — | Jul 12 – Sep 27 | 90–120 |
| Borage | Mar 1 | Mar 22 | Mar 29 | Aug 18 | May 24 – Jul 12 | 50–60 |
| Caraway | Mar 1 | Mar 22 | Mar 29 | Aug 18 | — | 365–450 |
| Catnip | — | — | Apr 12 | — | Jun 14 – Aug 16 | 60–80 |
| Chamomile | Mar 1 | Mar 22 | Mar 29 | Aug 18 | May 31 – Aug 9 | 60–90 |
| Chervil | Mar 1 | Mar 22 | Mar 29 | Aug 18 | May 10 – Jul 12 | 40–60 |
| Chives | — | — | Apr 12 | — | Jun 14 – Aug 23 | 60–90 |
| Cilantro | Mar 1 | Mar 22 | Mar 29 | Aug 18 | May 10 – Jul 12 | 40–60 |
| Comfrey | — | — | Apr 12 | — | Jun 14 – Aug 23 | 60–90 |
| Cumin | Mar 1 | Mar 22 | Mar 29 | Aug 18 | Jul 12 – Sep 13 | 100–120 |
| Dill | Mar 1 | Mar 22 | Mar 29 | Aug 18 | May 10 – Jul 12 | 40–60 |
| Epazote | Feb 15 | Apr 12 | Apr 19 | — | Jun 7 – Aug 2 | 45–60 |
| Fennel (herb) | Mar 1 | Mar 22 | Mar 29 | Aug 18 | May 31 – Aug 9 | 60–90 |
| Feverfew | — | — | Apr 12 | — | Jul 12 – Sep 27 | 90–120 |
| Garlic Chives | — | — | Apr 12 | — | Jun 14 – Aug 23 | 60–90 |
| Horehound | — | — | Apr 12 | — | Jun 28 – Aug 23 | 75–90 |
| Hyssop | — | — | Apr 12 | — | Jun 21 – Aug 23 | 70–90 |
| Lemon Balm | — | — | Apr 12 | — | Jun 14 – Aug 2 | 60–70 |
| Lemon Thyme | — | — | Apr 12 | — | Jun 21 – Aug 23 | 70–90 |
| Lovage | — | — | Apr 12 | — | Jun 21 – Aug 23 | 70–90 |
| Marjoram | — | — | Apr 12 | — | Jun 14 – Aug 23 | 60–90 |
| Mint | — | — | Apr 12 | — | Jun 14 – Aug 23 | 60–90 |
| Oregano | — | — | Apr 12 | — | Jun 14 – Aug 23 | 60–90 |
| Parsley | Mar 1 | Mar 22 | Mar 29 | Aug 18 | May 31 – Aug 2 | 60–80 |
| Rosemary | — | — | Apr 12 | — | Jul 5 – Nov 22 | 80–180 |
| Rue | — | — | Apr 12 | — | Jun 21 – Aug 23 | 70–90 |
| Sage | — | — | Apr 12 | — | Jun 28 – Aug 23 | 75–90 |
| Savory | — | — | Apr 12 | — | Jun 7 – Aug 2 | 50–70 |
| Sorrel | Mar 1 | Mar 22 | Mar 29 | Aug 18 | May 10 – Jul 12 | 40–60 |
| Tarragon | — | — | Apr 12 | — | Jun 14 – Aug 23 | 60–90 |
| Thai Basil | Feb 15 | Apr 12 | Apr 19 | — | Jun 14 – Aug 16 | 50–75 |
| Thyme | — | — | Apr 12 | — | Jun 21 – Aug 23 | 70–90 |
| Valerian | — | — | Apr 12 | — | Aug 16 – Nov 22 | 120–180 |
🌸 Flowers to Grow in Decatur County
53 flowers that grow well in Zone 7b with planting dates for Decatur County.
Show all 53 flowers with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Bloom | Days to Maturity |
|---|---|---|---|---|---|---|
| Ageratum | Feb 22 | Apr 5 | Apr 5 | — | May 31 – Oct 4 | 60–75 |
| Alliums | — | — | — | Sep 22 | Oct 20 – Nov 10 | 28–42 |
| Anemones | — | — | — | Sep 1 | Sep 15 – Oct 13 | 90–120 |
| Astilbe | Feb 1 | — | Apr 12 | — | Jun 21 – Aug 16 | 70–100 |
| Bachelor's Button | Feb 22 | Mar 1 | Apr 5 | Sep 1 | Jun 7 – Sep 13 | 60–90 |
| Begonias | Jan 25 | — | Apr 5 | — | Jun 14 – Oct 18 | 70–90 |
| Black-eyed Susan | Feb 1 | Mar 29 | Apr 12 | — | Jun 21 – Nov 1 | 60–80 |
| Bleeding Hearts | Feb 1 | — | Apr 12 | — | May 31 – Jul 5 | 60–90 |
| Calendula | Feb 22 | Mar 1 | Apr 5 | Sep 1 | May 24 – Sep 20 | 50–70 |
| California Poppy | — | Mar 8 | — | Sep 1 | May 17 – Aug 9 | 60–90 |
| Celosia | Mar 8 | Apr 5 | Apr 5 | — | Jun 7 – Oct 18 | 60–90 |
| Columbine | Feb 8 | Apr 12 | Apr 12 | — | May 31 – Jul 5 | 70–100 |
| Coreopsis | Feb 1 | Apr 5 | Apr 12 | — | Jun 14 – Nov 1 | 60–80 |
| Cosmos | Mar 8 | Mar 29 | Mar 29 | — | Jun 7 – Oct 11 | 60–90 |
| Crocus | — | — | — | Sep 22 | Aug 18 – Sep 8 | 10–20 |
| Daffodils | — | — | — | Sep 22 | Aug 25 – Sep 15 | 20–40 |
| Dahlias | Mar 15 | Apr 12 | Apr 12 | — | Jun 21 – Nov 8 | 70–120 |
| Daylily | Feb 1 | — | Apr 12 | — | Jun 21 – Nov 1 | 60–90 |
| Dianthus | Feb 8 | Mar 1 | Mar 8 | — | Apr 26 – Jul 19 | 60–80 |
| Echinacea (Purple Coneflower) | Feb 1 | Apr 12 | Apr 12 | — | Jun 28 – Nov 1 | 70–90 |
| Foxglove | Feb 8 | Apr 12 | Apr 12 | — | May 31 – Jul 5 | 80–120 |
| Gaillardia (Blanket Flower) | Feb 15 | Apr 5 | Apr 5 | — | Jun 14 – Nov 15 | 70–100 |
| Geraniums | Jan 25 | — | Apr 5 | — | Jun 14 – Oct 18 | 70–100 |
| Gladiolus | — | Apr 5 | Apr 5 | — | Jun 14 – Nov 1 | 70–100 |
| Hostas | Jan 25 | — | Apr 12 | — | Jun 21 – Oct 25 | 60–90 |
| Hyacinths | — | — | — | Sep 22 | Sep 15 – Oct 6 | 14–28 |
| Hydrangeas | Jan 25 | — | Apr 5 | — | Jun 14 – Oct 11 | 90–150 |
| Impatiens | Feb 8 | — | Apr 5 | — | Jun 14 – Oct 18 | 60–75 |
| Irises | — | Division | Apr 12 | — | May 31 – Jul 5 | 60–100 |
| Larkspur | — | Mar 8 | — | Aug 18 | May 17 – Aug 9 | 60–90 |
| Lavender | Feb 1 | — | Apr 12 | — | Jun 21 – Sep 13 | 90–120 |
| Lilies | — | Division | Apr 5 | — | Jun 14 – Oct 4 | 70–120 |
| Lobelia | Feb 1 | — | Mar 8 | — | May 3 – Jul 12 | 70–80 |
| Lupine | Feb 8 | Apr 12 | Apr 12 | — | May 31 – Jul 5 | 75–100 |
| Marigolds | Feb 22 | Apr 5 | Apr 5 | — | May 31 – Sep 20 | 50–70 |
| Nasturtium | Mar 8 | Apr 5 | Apr 5 | — | May 31 – Oct 18 | 55–65 |
| Pansy | Jan 25 | — | Mar 29 | Aug 18 | May 24 – Aug 16 | 70–90 |
| Peonies | — | Division | Apr 12 | — | Jun 7 – Jul 5 | 90–120 |
| Petunia | Feb 8 | — | Apr 5 | — | Jun 14 – Oct 11 | 70–90 |
| Phlox | Feb 1 | Apr 12 | Apr 12 | — | Jun 21 – Sep 13 | 80–110 |
| Portulaca | Mar 8 | Apr 5 | Apr 5 | — | May 24 – Oct 4 | 50–70 |
| Ranunculus | — | — | — | Sep 1 | Sep 22 – Oct 20 | 90–120 |
| Roses | Jan 25 | — | Apr 5 | — | Jun 14 – Oct 25 | 90–180 |
| Salvia | Feb 8 | — | Apr 5 | — | Jun 14 – Oct 18 | 70–90 |
| Sedum (Stonecrop) | Feb 1 | — | Apr 12 | — | Aug 2 – Oct 25 | 60–90 |
| Snapdragon | Jan 25 | Mar 8 | Mar 29 | Sep 1 | Jun 7 – Sep 13 | 70–100 |
| Sunflower | Mar 15 | Apr 5 | Apr 5 | — | Jun 28 – Oct 18 | 70–100 |
| Sweet Alyssum | Feb 22 | Mar 8 | Apr 5 | Sep 15 | May 17 – Aug 23 | 45–60 |
| Sweet Pea | — | — | — | Sep 1 | Nov 10 – Feb 2 | 65–85 |
| Tulips | — | — | — | Sep 22 | Sep 8 – Sep 29 | 15–30 |
| Vinca (Annual) | Jan 25 | — | Apr 5 | — | Jun 14 – Oct 18 | 70–90 |
| Yarrow | Feb 1 | Mar 29 | Apr 12 | — | Jun 14 – Nov 1 | 60–90 |
| Zinnia | Mar 8 | Apr 5 | Apr 5 | — | Jun 14 – Oct 18 | 60–70 |
Monthly Planting Guide for Decatur County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Decatur County.
Frequently Asked Questions
What planting zone is Decatur County, TN?
Decatur County is in USDA Hardiness Zone 7b. This zone classification determines which perennial plants survive winter and sets the baseline for frost timing across the county.
When is the last frost in Decatur County, TN?
Based on 31 years of NOAA weather station data, the median last spring frost in Decatur County falls around April 5. In 8 out of 10 years, last frost lands between March 20 and April 21 — a 32-day window of variability. Use April 21 as your conservative safe-to-plant date for frost-sensitive crops.
When is the first fall frost in Decatur County, TN?
The median first fall frost in Decatur County arrives around October 27. In cold years it can arrive as early as October 12; in mild years as late as November 13. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in Decatur County?
Decatur County has a frost-free growing season of approximately 205 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 2.66 days per decade.
What is the soil like in Decatur County for gardening?
Decatur County has predominantly Silt Loam soil with a pH range of 5.3–6.5 and Moderately Well Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.
What is grown commercially in Decatur County?
Decatur County has commercial agriculture that includes Soybeans, Corn, Hay, Wheat. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.
Is Decatur County a good location for home gardening?
Decatur County scores 52/100 (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 Decatur County Garden Planner — Free
A 22-page printable planner built for Decatur County (Zone 7b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.
The Gardener's Encyclopedia to Companion Planting
The pairings that make vegetables, herbs, and flowers grow better — and the ones that quietly wreck a bed.
- Proven pairings for 200+ vegetables, herbs, flowers, and fruits
- Full seed-starting + planting schedule with timing and spacing
- Bonus: square-foot gardening guide + printable seasonal planners
Seed Saving & Storage Guide
Most saved seeds go bad before next season. This shows exactly when to pick, how to dry, and where to store seeds from 200 plants so yours don't.
- 200 plants, step-by-step: life cycle, pollination type, isolation
- Exact temperature + humidity ranges that keep seeds viable
- Bonus: searchable Google Sheets tracker + custom GPT assistant
Composting Guide for Homesteaders
Turn kitchen scraps and yard waste into compost that actually feeds the garden — instead of a pile that smells, attracts pests, and never breaks down.
- 14 sections on composting methods, soil science, and troubleshooting
- The 7-step hot-compost system from start to finish
- Bonus tools: troubleshooting chart, safety guide, monitoring log