Grainger County, TN — Planting Guide
Your June planting checklist for Grainger County, Tennessee
June is a pivotal month for Grainger County, Tennessee gardens. Focus on these tasks first and you'll set up the rest of the season for success.
-
Start basil, peppers, and pole beans under lights
Bottom-water once the first true leaves appear — it keeps stems dry and knocks back damping-off.
-
Basket week: basil, carrots, and cucumber
Check every 1–2 days. Many of these get tough or go to seed if you wait too long.
To set up a strong July, finish these tasks
- First harvests: basil, carrots, and cucumber
Grainger County is in USDA Zone 7b. The average last spring frost is April 15 and the first fall frost is October 22, giving you a growing season of approximately 190 days.
At an elevation of 3,009 ft, Grainger County receives approximately 49.5 in of rainfall annually. Summer highs average 92°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 31 days year to year — ranging from March 31 in warm years to May 2 in cold years. Grainger County scores 66/100 (Good) on the Microclimate Index.
🌡️ Zone
7b (5°F to 10°F min)
❄️ Last Frost
April 15
🍂 First Frost
October 22
📅 Growing Season
190 days
⛰️ Elevation
3,009 ft
🌧️ Annual Rainfall
49.5 in
Monthly Watering Calendar for Grainger 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: Watering by the calendar wastes water. Watering by the soil moisture (or by a free rain gauge) cuts your water use 30%+ and produces healthier roots. Grainger County's 50" annual baseline is the starting point.
View detailed monthly data
| Month | Avg Rainfall | Rainy Days | Extra Water Needed | Watering Effort |
|---|---|---|---|---|
| Jan | 4.1 in | 9 days | — | None |
| Feb | 3.6 in | 10 days | — | None |
| Mar | 4.9 in | 10 days | — | Low |
| Apr | 3.8 in | 6 days | 0.5 in | Low |
| May | 4.4 in | 9 days | — | Low |
| Jun | 4 in | 11 days | 0.3 in | Low |
| Jul | 5.3 in | 10 days | — | Low |
| Aug | 5.2 in | 12 days | — | Low |
| Sep | 3.6 in | 8 days | 0.7 in | Moderate |
| Oct | 3.3 in | 7 days | 1 in | Moderate |
| Nov | 3.7 in | 7 days | — | None |
| Dec | 3.5 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.
Grainger County Soil Profile
Soil Type
Silt Loam
Soil pH
5.5-6.8
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 2 | Nov 3 | 185 days |
| Cautious | Apr 22 | Oct 29 | 190 days |
| Average year | Apr 15 | Oct 22 | 190 days |
| Optimistic | Apr 8 | Oct 18 | 193 days |
| Aggressive (risky) | Mar 31 | Oct 12 | 195 days |
Not very — frost dates can vary by ±31 days year-to-year. Use the "Conservative" row in the table below, and keep row covers handy for surprise late frosts.
Gardening Difficulty Score
Grainger County offers good growing conditions. A little planning around frost dates goes a long way.
Local Gardening Help in Grainger 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 Grainger County's climate and soil.
County Extension Office
Grainger 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 Grainger County
Finding local nurseries & garden centers in Grainger County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Grainger 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 Grainger County TN" or "garden center Grainger 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 Grainger County TN" or check your extension office and local parks department. Facebook groups like "Grainger 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 Grainger County
Monthly daylight hours and peak sun — critical for onion varieties, photoperiod-sensitive plants, and solar garden planning.
Why this matters: Day length is the trigger that tells lettuce, spinach, and cilantro to bolt. In Grainger County, knowing when that day-length threshold arrives helps you plant a final round in time to harvest before it bolts.
Longest Day
14.5 hours
Summer solstice daylight
Shortest Day
9.5 hours
Winter solstice daylight
Peak Sun Hours
8.7 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 | 4.9 hr | Short day |
| February | 10.7 hr | 5.5 hr | Short day |
| March | 11.7 hr | 6.2 hr | Short day |
| April | 12.9 hr | 8.1 hr | Neutral |
| May | 13.9 hr | 8.6 hr | Neutral |
| June | 14.5 hr | 8.7 hr | Long day |
| July | 14.2 hr | 7.8 hr | Long day |
| August | 13.4 hr | 7 hr | Neutral |
| September | 12.2 hr | 7.3 hr | Neutral |
| October | 11 hr | 6.9 hr | Short day |
| November | 10 hr | 5.3 hr | Short day |
| December | 9.5 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 in Grainger County
Monthly soil temps tell you when to plant warm-season crops, and when your compost pile is actively working.
Why this matters: Compost piles need 130-160°F internal temp to actively break down. Below 50°F ambient, microbial activity slows dramatically. Grainger County's soil temperature curve also tells you when your compost is working and when it's napping.
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
7 months
Solid season. Piles go dormant in winter.
View detailed monthly data
| Month | Soil 4" Deep | Soil 8" Deep | Compost Activity | Time to Finish |
|---|---|---|---|---|
| Jan | 31°F | 38°F | ❄️ Dormant | ~36 weeks |
| Feb | 30°F | 39°F | ❄️ Dormant | ~36 weeks |
| Mar | 39°F | 43°F | ❄️ Dormant | ~36 weeks |
| Apr | 50°F | 48°F | ♻️ Active | ~14 weeks |
| May | 62°F | 59°F | ♻️ Active | ~14 weeks |
| Jun | 70°F | 67°F | 🔥 Peak | ~8 weeks |
| Jul | 79°F | 72°F | 🔥 Peak | ~8 weeks |
| Aug | 81°F | 77°F | 🔥 Peak | ~8 weeks |
| Sep | 73°F | 73°F | 🔥 Peak | ~8 weeks |
| Oct | 63°F | 65°F | ♻️ Active | ~14 weeks |
| Nov | 48°F | 53°F | 🐢 Slow | ~24 weeks |
| Dec | 35°F | 45°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 Grainger County
Computed from local climate patterns — warmer, humid conditions increase pest generations and fungal disease risk.
Why this matters: 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 | High | 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 Grainger County
Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with planting dates calibrated for your area.
The practical takeaway: In Grainger County, cover crops also crowd out weeds. The denser the cover, the less weed pressure next season. Pays for itself in saved weeding time.
Spring Cover Crops (4 options) — Build soil before the main growing season
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Buckwheat | Apr 20 | Aug 27 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Cowpeas (southern peas) | Apr 20 | Aug 20 | ✓ Yes | Excellent nitrogen fixer for warm climates, edible |
| Sorghum-sudan grass | Apr 22 | Aug 27 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | Mar 18 | Aug 13 | ✓ 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 10 | Oct 1 | — | 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 15 | Mar 25 | ✓ Yes | Fixes nitrogen, good for heavy clay soils |
| Crimson clover | Aug 13 | Mar 25 | ✓ Yes | Fixes nitrogen, attracts pollinators in spring |
| Daikon radish | Sep 7 | Apr 1 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Aug 2 | Apr 1 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Sep 19 | Mar 25 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Jul 31 | Apr 1 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Aug 2 | Apr 1 | — | Erosion control, weed suppression, good biomass |
Wind & Microclimate in Grainger County
For new gardeners: Wind shapes the garden you don't think about: bee paths, evaporation, structural stress on tomato cages. Grainger County's 7.9 mph background level is a baseline you should know before placing the tallest crops (sunflowers, pole beans, sweet corn).
Wind dries soil, stresses plants, and affects frost patterns. Understanding your exposure helps with garden placement.
Seasonal Wind Speed
Spring: 11 mph Summer: 8 mph
Fall: 8 mph Winter: 12 mph
Prevailing wind: SW. Moderate wind — consider a temporary windbreak for young seedlings.
Windbreak Benefit
5/10
Moderately beneficial — a simple fence or trellis can protect delicate crops from wind stress.
Frost Pocket Risk
Moderate
Some terrain variation (503 ft range). Garden on slopes or higher ground if possible to avoid late-season frost pockets.
Rainwater Harvesting in Grainger 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. Grainger County's 50" annual rainfall means even a small 50-gallon barrel catches enough for a few weeks of garden watering between storms.
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 500 gal tank.
Legal Status
Unrestricted
Rainwater harvesting is fully legal in your state with no restrictions.
Best Collection Months
Mar, May, Jul, Aug
Highest rainfall months — your barrels will fill up quickly during these months.
Months to Draw From Storage
Sep, Oct, Dec
Dry months when you'll rely on stored water — size your storage for this gap.
Rainwater collection tips for your area
- Your county receives approximately 49.4 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 (Sep, Oct, Dec)
- Use a first-flush diverter to keep roof debris out of your collection
Soil & Growing Conditions in Grainger County
Soil Type
Silt Loam
Soil pH 5.5–6.8 · Moderately Well Drained drainage
Good candidate for raised beds to maximise drainage and extend the season.
Watering Needs
Drought stress: 3.5/10
Low-to-moderate drought stress. Plan to water 1–2 times per week during peak summer. (49.5 in. annual rainfall)
Season Tips
190-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 Grainger County
112 vegetables that grow well in Zone 7b with planting dates for Grainger County.
Show all 112 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Acorn Squash | Mar 18 | Apr 22 | Apr 29 | — | Jul 22 – Aug 26 | 80–100 |
| Amaranth | Feb 25 | Apr 22 | Apr 29 | — | Jul 29 – Sep 16 | 90–120 |
| Artichoke | — | — | Apr 29 | — | Sep 2 – Nov 11 | 120–180 |
| Arugula | Mar 11 | Apr 1 | Apr 15 | Aug 13 | May 20 – Jul 22 | 30–50 |
| Asparagus | — | — | Apr 29 | — | — | 730–1095 |
| Beets | — | Apr 1 | — | Aug 13 | May 27 – Jun 24 | 50–70 |
| Belgian Endive | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Aug 5 – Sep 30 | 110–150 |
| Bitter Melon | Feb 25 | Apr 22 | Apr 29 | — | Jul 1 – Aug 12 | 60–90 |
| Black Beans | — | Apr 22 | — | — | Jul 22 – Sep 9 | 90–120 |
| Bok Choy | Mar 11 | Apr 1 | Apr 15 | Aug 13 | May 27 – Jul 1 | 40–60 |
| Broccoli | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Jun 17 – Jul 29 | 60–90 |
| Broccoli Rabe | Mar 11 | Apr 1 | Apr 15 | Aug 13 | May 27 – Jul 1 | 40–60 |
| Brussels Sprouts | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Jul 15 – Sep 9 | 90–130 |
| Butternut Squash | Mar 18 | Apr 22 | Apr 29 | — | Jul 29 – Sep 2 | 85–110 |
| Cabbage | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Jun 17 – Aug 12 | 60–100 |
| Calabash | Feb 25 | Apr 22 | Apr 29 | — | Jul 22 – Sep 16 | 80–120 |
| Cardoon | — | — | Apr 29 | — | Sep 2 – Oct 14 | 120–150 |
| Carrots | — | Apr 1 | — | Aug 13 | Jun 3 – Jul 8 | 60–80 |
| Cauliflower | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Jun 10 – Aug 12 | 55–100 |
| Celeriac | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Jul 29 – Sep 2 | 100–120 |
| Celery | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Jul 8 – Sep 2 | 80–120 |
| Celtuce | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Jun 17 – Jul 29 | 60–90 |
| Chard | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Jun 10 – Jul 29 | 50–60 |
| Chayote | Feb 25 | Apr 22 | Apr 29 | — | Sep 2 – Nov 11 | 120–180 |
| Chickpeas | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Jul 8 – Aug 19 | 80–110 |
| Chicory | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Jun 17 – Jul 29 | 60–85 |
| Chinese Cabbage | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Jun 10 – Jul 8 | 50–70 |
| Christmas Lima Beans | Feb 25 | Apr 22 | Apr 29 | — | Jul 22 – Aug 26 | 80–100 |
| Collard Greens | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Jun 10 – Aug 12 | 55–75 |
| Corn | — | Apr 22 | — | — | Jun 24 – Aug 19 | 60–100 |
| Cowpeas | — | Apr 22 | — | — | Jun 24 – Aug 5 | 60–90 |
| Cress | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Apr 29 – May 20 | 14–21 |
| Crookneck Squash | Mar 18 | Apr 22 | Apr 29 | — | Jun 17 – Jul 15 | 45–60 |
| Crosne | — | Apr 1 | — | Aug 13 | Sep 2 – Nov 4 | 150–200 |
| Cucumber | Mar 18 | Apr 22 | Apr 29 | — | Jun 24 – Aug 19 | 50–70 |
| Daikon | — | Apr 1 | — | Aug 13 | May 27 – Jun 24 | 50–70 |
| Delicata Squash | Mar 18 | Apr 22 | Apr 29 | — | Jul 22 – Aug 26 | 80–100 |
| Edamame | — | Apr 22 | — | — | Jul 8 – Aug 19 | 75–100 |
| Eggplant | Feb 11 | Apr 22 | Apr 29 | — | Jul 8 – Sep 9 | 65–85 |
| Endive | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Jun 3 – Jul 8 | 45–65 |
| Escarole | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Jun 10 – Jul 8 | 50–70 |
| Fava Beans | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Jul 1 – Aug 12 | 75–100 |
| Fennel | Feb 25 | Apr 22 | Apr 29 | — | Jul 1 – Aug 12 | 60–90 |
| Garlic | — | — | — | Sep 10 | Dec 10 – Apr 22 | 90–240 |
| Green Beans | — | Apr 22 | — | — | Jun 17 – Aug 12 | 50–65 |
| Horseradish | — | — | Apr 29 | — | Sep 2 – Nov 11 | 120–180 |
| Hot Peppers | Feb 11 | Apr 22 | Apr 29 | — | Jul 8 – Oct 14 | 70–120 |
| Hubbard Squash | Mar 18 | Apr 22 | Apr 29 | — | Aug 12 – Sep 16 | 100–120 |
| Jicama | Feb 25 | Apr 22 | Apr 29 | — | Sep 2 – Nov 11 | 120–180 |
| Kabocha | Mar 18 | Apr 22 | Apr 29 | — | Jul 29 – Aug 26 | 85–100 |
| Kai Lan | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Jun 3 – Jul 1 | 45–60 |
| Kale | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Jun 10 – Aug 5 | 50–70 |
| Kidney Beans | — | Apr 22 | — | — | Jul 22 – Aug 26 | 85–110 |
| Kohlrabi | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Jun 3 – Jul 8 | 45–65 |
| Komatsuna | Mar 11 | Apr 1 | Apr 15 | Aug 13 | May 20 – Jun 24 | 35–50 |
| Leeks | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Jul 15 – Sep 30 | 90–150 |
| Lentils | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Jul 8 – Aug 19 | 80–110 |
| Lettuce | Mar 11 | Apr 1 | Apr 15 | Aug 13 | May 20 – Jul 29 | 30–60 |
| Lima Beans | — | Apr 22 | — | — | Jun 24 – Aug 5 | 60–90 |
| Loofah | Feb 25 | Apr 22 | Apr 29 | — | Aug 12 – Oct 14 | 100–150 |
| Luffa | Feb 25 | Apr 22 | Apr 29 | — | Jul 29 – Oct 14 | 90–150 |
| Mache | Mar 11 | Apr 1 | Apr 15 | Aug 13 | May 27 – Jul 1 | 40–60 |
| Malabar Spinach | Feb 25 | Apr 22 | Apr 29 | — | Jun 24 – Jul 22 | 55–70 |
| Melon | Mar 18 | Apr 22 | Apr 29 | — | Jul 8 – Aug 26 | 70–100 |
| Microgreens | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Apr 22 – May 20 | 7–21 |
| Mitsuba | Mar 11 | Apr 1 | Apr 8 | Aug 13 | Jun 3 – Jul 29 | 50–70 |
| Mizuna | Mar 11 | Apr 1 | Apr 15 | Aug 13 | May 20 – Jun 17 | 30–45 |
| Mustard Greens | Mar 11 | Apr 1 | Apr 15 | Aug 13 | May 20 – Jul 22 | 30–50 |
| Napa Cabbage | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Jun 10 – Jul 15 | 55–75 |
| New Zealand Spinach | Feb 25 | Apr 22 | Apr 29 | — | Jun 24 – Jul 22 | 55–70 |
| Okra | Feb 25 | Apr 22 | Apr 29 | — | Jun 24 – Aug 19 | 50–65 |
| Onion | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Jul 15 – Sep 2 | 90–120 |
| Pac Choi | Mar 11 | Apr 1 | Apr 15 | Aug 13 | May 27 – Jun 24 | 40–55 |
| Parsnip | — | Apr 1 | — | Aug 13 | Jul 15 – Aug 26 | 100–130 |
| Patty Pan Squash | Mar 18 | Apr 22 | Apr 29 | — | Jun 17 – Jul 15 | 45–60 |
| Peas | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Jun 10 – Aug 5 | 55–70 |
| Peppers | Feb 11 | Apr 22 | Apr 29 | — | Jul 1 – Sep 9 | 60–90 |
| Pole Beans | Feb 25 | Apr 22 | Apr 29 | — | Jun 24 – Aug 19 | 55–70 |
| Potatoes | Feb 25 | Apr 22 | Apr 29 | — | Jul 8 – Sep 16 | 70–120 |
| Pumpkin | Mar 18 | Apr 22 | Apr 29 | — | Jul 29 – Sep 16 | 85–120 |
| Purslane | Mar 11 | Apr 1 | Apr 15 | Aug 13 | May 27 – Jul 1 | 40–60 |
| Radicchio | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Jun 17 – Jul 22 | 60–80 |
| Radish | — | Apr 1 | — | Aug 13 | Apr 29 – May 20 | 22–35 |
| Rhubarb | — | — | May 6 | — | — | 365–730 |
| Romanesco | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Jul 1 – Aug 12 | 75–100 |
| Rutabaga | — | Apr 1 | — | Aug 13 | Jun 24 – Jul 29 | 80–100 |
| Salsify | — | Apr 1 | — | Aug 13 | Jul 15 – Aug 26 | 100–130 |
| Savoy Cabbage | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Jun 24 – Aug 19 | 70–110 |
| Scallions | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Jun 10 – Jul 8 | 50–70 |
| Scarlet Runner Beans | Feb 25 | Apr 22 | Apr 29 | — | Jul 1 – Aug 5 | 60–80 |
| Shallot | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Jul 15 – Sep 2 | 90–120 |
| Shiso | Feb 25 | Apr 22 | Apr 29 | — | Jun 24 – Aug 19 | 50–70 |
| Snap Peas | Feb 25 | Apr 22 | Apr 29 | — | Jun 24 – Aug 19 | 55–70 |
| Snow Peas | Mar 11 | Apr 1 | Apr 15 | Aug 13 | Jun 10 – Aug 5 | 50–65 |
| Soybeans | — | Apr 22 | — | — | Jul 15 – Sep 9 | 80–120 |
| Spaghetti Squash | Mar 18 | Apr 22 | Apr 29 | — | Jul 29 – Aug 26 | 85–100 |
| Spinach | Mar 11 | Apr 1 | Apr 15 | Aug 13 | May 20 – Jul 22 | 35–50 |
| Squash (Summer) | Mar 18 | Apr 22 | Apr 29 | — | Jun 17 – Aug 19 | 45–65 |
| Squash (Winter) | Mar 18 | Apr 22 | Apr 29 | — | Jul 22 – Sep 16 | 80–120 |
| Sunchoke | — | — | Apr 29 | — | Aug 19 – Oct 14 | 110–150 |
| Sweet Corn | — | Apr 22 | — | — | Jun 24 – Aug 5 | 60–90 |
| Sweet Potatoes | Feb 25 | Apr 22 | Apr 29 | — | Jul 29 – Sep 16 | 90–120 |
| Tatsoi | Mar 11 | Apr 1 | Apr 15 | Aug 13 | May 20 – Jun 24 | 35–50 |
| Tomatillo | Feb 25 | Apr 22 | Apr 29 | — | Jul 1 – Sep 9 | 60–85 |
| Tomatoes | Feb 25 | Apr 22 | Apr 29 | — | Jul 1 – Sep 9 | 60–85 |
| Turnip | — | Apr 1 | — | Aug 13 | May 13 – Jun 17 | 40–60 |
| Watercress | Mar 11 | Apr 1 | Apr 15 | Aug 13 | May 27 – Jul 1 | 40–60 |
| Watermelon | Mar 18 | Apr 22 | Apr 29 | — | Jul 8 – Aug 26 | 70–100 |
| Wax Beans | — | Apr 22 | — | — | Jun 17 – Aug 12 | 50–65 |
| Winter Melon | Feb 25 | Apr 22 | Apr 29 | — | Jul 29 – Sep 16 | 90–120 |
| Yard Long Beans | Feb 25 | Apr 22 | Apr 29 | — | Jun 24 – Aug 5 | 55–80 |
| Zucchini | Mar 18 | Apr 22 | Apr 29 | — | Jun 17 – Aug 12 | 45–60 |
🍓 Fruits to Grow in Grainger County
31 fruits that grow well in Zone 7b with planting dates for Grainger County.
Show all 31 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Alpine Strawberries | — | — | May 6 | — | Aug 5 – Nov 18 | 90–180 |
| Aronia | — | — | May 6 | — | — | 730–1095 |
| Blackberries | — | — | May 6 | — | — | 365–730 |
| Blueberries | — | — | May 6 | — | — | 730–1095 |
| Boysenberries | — | — | May 6 | — | — | 365–730 |
| Cantaloupe | — | — | May 6 | — | Jul 15 – Aug 19 | 70–90 |
| Che Fruit | — | — | May 6 | — | — | 1095–1825 |
| Cranberries | — | — | May 6 | — | — | 730–1095 |
| Currants | — | — | May 6 | — | — | 730–1095 |
| Elderberries | — | — | May 6 | — | — | 730–1095 |
| Figs | — | — | May 6 | — | — | 730–1825 |
| Goji Berries | — | — | May 6 | — | — | 730–1095 |
| Gooseberries | — | — | May 6 | — | — | 730–1095 |
| Grapes | — | — | May 6 | — | — | 730–1095 |
| Ground Cherry | — | — | May 6 | — | Jul 15 – Sep 9 | 65–80 |
| Hardy Kiwi | — | — | May 6 | — | — | 1095–1825 |
| Haskaps | — | — | May 6 | — | — | 730–1095 |
| Honeydew | — | — | May 6 | — | Jul 29 – Sep 9 | 80–110 |
| Jostaberry | — | — | May 6 | — | — | 730–1095 |
| Kiwi | — | — | May 6 | — | — | 1095–1825 |
| Lingonberries | — | — | May 6 | — | — | 730–1095 |
| Loquat | — | — | May 6 | — | — | 730–1825 |
| Medlar | — | — | May 6 | — | — | 1095–1825 |
| Mulberries | — | — | May 6 | — | — | 730–1825 |
| Pawpaw | — | — | May 6 | — | — | 1095–2555 |
| Persimmon | — | — | May 6 | — | — | 1095–2555 |
| Pomegranate | — | — | May 6 | — | — | 730–1095 |
| Quince | — | — | May 6 | — | — | 1095–1825 |
| Raspberries | — | — | May 6 | — | — | 365–730 |
| Serviceberries | — | — | May 6 | — | — | 730–1095 |
| Strawberries | — | — | May 6 | — | Aug 5 – Dec 16 | 90–365 |
🌿 Herbs to Grow in Grainger County
36 herbs that grow well in Zone 7b with planting dates for Grainger County.
Show all 36 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Harvest | Days to Maturity |
|---|---|---|---|---|---|---|
| Angelica | Mar 11 | Apr 1 | Apr 8 | Aug 13 | — | 365–730 |
| Anise | Mar 11 | Apr 1 | Apr 8 | Aug 13 | Jul 8 – Sep 23 | 90–120 |
| Basil | Feb 25 | Apr 22 | Apr 29 | — | Jun 24 – Aug 26 | 50–75 |
| Bee Balm | — | — | Apr 22 | — | Jul 22 – Oct 7 | 90–120 |
| Borage | Mar 11 | Apr 1 | Apr 8 | Aug 13 | Jun 3 – Jul 22 | 50–60 |
| Caraway | Mar 11 | Apr 1 | Apr 8 | Aug 13 | — | 365–450 |
| Catnip | — | — | Apr 22 | — | Jun 24 – Aug 26 | 60–80 |
| Chamomile | Mar 11 | Apr 1 | Apr 8 | Aug 13 | Jun 10 – Aug 19 | 60–90 |
| Chervil | Mar 11 | Apr 1 | Apr 8 | Aug 13 | May 20 – Jul 22 | 40–60 |
| Chives | — | — | Apr 22 | — | Jun 24 – Sep 2 | 60–90 |
| Cilantro | Mar 11 | Apr 1 | Apr 8 | Aug 13 | May 20 – Jul 22 | 40–60 |
| Comfrey | — | — | Apr 22 | — | Jun 24 – Sep 2 | 60–90 |
| Cumin | Mar 11 | Apr 1 | Apr 8 | Aug 13 | Jul 22 – Sep 23 | 100–120 |
| Dill | Mar 11 | Apr 1 | Apr 8 | Aug 13 | May 20 – Jul 22 | 40–60 |
| Epazote | Feb 25 | Apr 22 | Apr 29 | — | Jun 17 – Aug 12 | 45–60 |
| Fennel (herb) | Mar 11 | Apr 1 | Apr 8 | Aug 13 | Jun 10 – Aug 19 | 60–90 |
| Feverfew | — | — | Apr 22 | — | Jul 22 – Oct 7 | 90–120 |
| Garlic Chives | — | — | Apr 22 | — | Jun 24 – Sep 2 | 60–90 |
| Horehound | — | — | Apr 22 | — | Jul 8 – Sep 2 | 75–90 |
| Hyssop | — | — | Apr 22 | — | Jul 1 – Sep 2 | 70–90 |
| Lemon Balm | — | — | Apr 22 | — | Jun 24 – Aug 12 | 60–70 |
| Lemon Thyme | — | — | Apr 22 | — | Jul 1 – Sep 2 | 70–90 |
| Lovage | — | — | Apr 22 | — | Jul 1 – Sep 2 | 70–90 |
| Marjoram | — | — | Apr 22 | — | Jun 24 – Sep 2 | 60–90 |
| Mint | — | — | Apr 22 | — | Jun 24 – Sep 2 | 60–90 |
| Oregano | — | — | Apr 22 | — | Jun 24 – Sep 2 | 60–90 |
| Parsley | Mar 11 | Apr 1 | Apr 8 | Aug 13 | Jun 10 – Aug 12 | 60–80 |
| Rosemary | — | — | Apr 22 | — | Jul 15 – Dec 2 | 80–180 |
| Rue | — | — | Apr 22 | — | Jul 1 – Sep 2 | 70–90 |
| Sage | — | — | Apr 22 | — | Jul 8 – Sep 2 | 75–90 |
| Savory | — | — | Apr 22 | — | Jun 17 – Aug 12 | 50–70 |
| Sorrel | Mar 11 | Apr 1 | Apr 8 | Aug 13 | May 20 – Jul 22 | 40–60 |
| Tarragon | — | — | Apr 22 | — | Jun 24 – Sep 2 | 60–90 |
| Thai Basil | Feb 25 | Apr 22 | Apr 29 | — | Jun 24 – Aug 26 | 50–75 |
| Thyme | — | — | Apr 22 | — | Jul 1 – Sep 2 | 70–90 |
| Valerian | — | — | Apr 22 | — | Aug 26 – Dec 2 | 120–180 |
🌸 Flowers to Grow in Grainger County
53 flowers that grow well in Zone 7b with planting dates for Grainger County.
Show all 53 flowers with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Fall Plant | Bloom | Days to Maturity |
|---|---|---|---|---|---|---|
| Ageratum | Mar 4 | Apr 15 | Apr 15 | — | Jun 10 – Oct 14 | 60–75 |
| Alliums | — | — | — | Sep 17 | Oct 15 – Nov 5 | 28–42 |
| Anemones | — | — | — | Aug 27 | Sep 10 – Oct 8 | 90–120 |
| Astilbe | Feb 11 | — | Apr 22 | — | Jul 1 – Aug 26 | 70–100 |
| Bachelor's Button | Mar 4 | Mar 11 | Apr 15 | Aug 27 | Jun 17 – Sep 23 | 60–90 |
| Begonias | Feb 4 | — | Apr 15 | — | Jun 24 – Oct 28 | 70–90 |
| Black-eyed Susan | Feb 11 | Apr 8 | Apr 22 | — | Jul 1 – Nov 11 | 60–80 |
| Bleeding Hearts | Feb 11 | — | Apr 22 | — | Jun 10 – Jul 15 | 60–90 |
| Calendula | Mar 4 | Mar 11 | Apr 15 | Aug 27 | Jun 3 – Sep 30 | 50–70 |
| California Poppy | — | Mar 18 | — | Aug 27 | May 27 – Aug 19 | 60–90 |
| Celosia | Mar 18 | Apr 15 | Apr 15 | — | Jun 17 – Oct 28 | 60–90 |
| Columbine | Feb 18 | Apr 22 | Apr 22 | — | Jun 10 – Jul 15 | 70–100 |
| Coreopsis | Feb 11 | Apr 15 | Apr 22 | — | Jun 24 – Nov 11 | 60–80 |
| Cosmos | Mar 18 | Apr 8 | Apr 8 | — | Jun 17 – Oct 21 | 60–90 |
| Crocus | — | — | — | Sep 17 | Aug 13 – Sep 3 | 10–20 |
| Daffodils | — | — | — | Sep 17 | Aug 20 – Sep 10 | 20–40 |
| Dahlias | Mar 25 | Apr 22 | Apr 22 | — | Jul 1 – Nov 18 | 70–120 |
| Daylily | Feb 11 | — | Apr 22 | — | Jul 1 – Nov 11 | 60–90 |
| Dianthus | Feb 18 | Mar 11 | Mar 18 | — | May 6 – Jul 29 | 60–80 |
| Echinacea (Purple Coneflower) | Feb 11 | Apr 22 | Apr 22 | — | Jul 8 – Nov 11 | 70–90 |
| Foxglove | Feb 18 | Apr 22 | Apr 22 | — | Jun 10 – Jul 15 | 80–120 |
| Gaillardia (Blanket Flower) | Feb 25 | Apr 15 | Apr 15 | — | Jun 24 – Nov 25 | 70–100 |
| Geraniums | Feb 4 | — | Apr 15 | — | Jun 24 – Oct 28 | 70–100 |
| Gladiolus | — | Apr 15 | Apr 15 | — | Jun 24 – Nov 11 | 70–100 |
| Hostas | Feb 4 | — | Apr 22 | — | Jul 1 – Nov 4 | 60–90 |
| Hyacinths | — | — | — | Sep 17 | Sep 10 – Oct 1 | 14–28 |
| Hydrangeas | Feb 4 | — | Apr 15 | — | Jun 24 – Oct 21 | 90–150 |
| Impatiens | Feb 18 | — | Apr 15 | — | Jun 24 – Oct 28 | 60–75 |
| Irises | — | Division | Apr 22 | — | Jun 10 – Jul 15 | 60–100 |
| Larkspur | — | Mar 18 | — | Aug 13 | May 27 – Aug 19 | 60–90 |
| Lavender | Feb 11 | — | Apr 22 | — | Jul 1 – Sep 23 | 90–120 |
| Lilies | — | Division | Apr 15 | — | Jun 24 – Oct 14 | 70–120 |
| Lobelia | Feb 11 | — | Mar 18 | — | May 13 – Jul 22 | 70–80 |
| Lupine | Feb 18 | Apr 22 | Apr 22 | — | Jun 10 – Jul 15 | 75–100 |
| Marigolds | Mar 4 | Apr 15 | Apr 15 | — | Jun 10 – Sep 30 | 50–70 |
| Nasturtium | Mar 18 | Apr 15 | Apr 15 | — | Jun 10 – Oct 28 | 55–65 |
| Pansy | Feb 4 | — | Apr 8 | Aug 13 | Jun 3 – Aug 26 | 70–90 |
| Peonies | — | Division | Apr 22 | — | Jun 17 – Jul 15 | 90–120 |
| Petunia | Feb 18 | — | Apr 15 | — | Jun 24 – Oct 21 | 70–90 |
| Phlox | Feb 11 | Apr 22 | Apr 22 | — | Jul 1 – Sep 23 | 80–110 |
| Portulaca | Mar 18 | Apr 15 | Apr 15 | — | Jun 3 – Oct 14 | 50–70 |
| Ranunculus | — | — | — | Aug 27 | Sep 17 – Oct 15 | 90–120 |
| Roses | Feb 4 | — | Apr 15 | — | Jun 24 – Nov 4 | 90–180 |
| Salvia | Feb 18 | — | Apr 15 | — | Jun 24 – Oct 28 | 70–90 |
| Sedum (Stonecrop) | Feb 11 | — | Apr 22 | — | Aug 12 – Nov 4 | 60–90 |
| Snapdragon | Feb 4 | Mar 18 | Apr 8 | Aug 27 | Jun 17 – Sep 23 | 70–100 |
| Sunflower | Mar 25 | Apr 15 | Apr 15 | — | Jul 8 – Oct 28 | 70–100 |
| Sweet Alyssum | Mar 4 | Mar 18 | Apr 15 | Sep 10 | May 27 – Sep 2 | 45–60 |
| Sweet Pea | — | — | — | Aug 27 | Nov 5 – Jan 28 | 65–85 |
| Tulips | — | — | — | Sep 17 | Sep 3 – Sep 24 | 15–30 |
| Vinca (Annual) | Feb 4 | — | Apr 15 | — | Jun 24 – Oct 28 | 70–90 |
| Yarrow | Feb 11 | Apr 8 | Apr 22 | — | Jun 24 – Nov 11 | 60–90 |
| Zinnia | Mar 18 | Apr 15 | Apr 15 | — | Jun 24 – Oct 28 | 60–70 |
Monthly Planting Guide for Grainger County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Grainger County.
Frequently Asked Questions
What planting zone is Grainger County, TN?
Grainger 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 Grainger County, TN?
Based on 31 years of NOAA weather station data, the median last spring frost in Grainger County falls around April 15. In 8 out of 10 years, last frost lands between March 31 and May 2 — a 31-day window of variability. Use May 2 as your conservative safe-to-plant date for frost-sensitive crops.
When is the first fall frost in Grainger County, TN?
The median first fall frost in Grainger County arrives around October 22. In cold years it can arrive as early as October 12; in mild years as late as November 3. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in Grainger County?
Grainger County has a frost-free growing season of approximately 190 days. This is enough time for most warm-season crops including tomatoes, peppers, and squash with proper timing.
What is the soil like in Grainger County for gardening?
Grainger County has predominantly Silt Loam soil with a pH range of 5.5–6.8 and Moderately Well Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.
What is grown commercially in Grainger County?
Grainger County has commercial agriculture that includes Soybeans, Corn, Cattle, Hay, Tobacco. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.
Is Grainger County a good location for home gardening?
Grainger County scores 66/100 (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 Grainger County Garden Planner — Free
A 22-page printable planner built for Grainger 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