Smyth County, VA — Planting Guide
Smyth County is in USDA Zone 6b. The average last spring frost is May 2 and the first fall frost is October 12, giving you a growing season of approximately 163 days.
At an elevation of 375 ft, Smyth County receives approximately 51.2 in of rainfall annually. Summer highs average 86°F with winter lows around 25°F. The predominant soil type is Silt Loam.
Based on 31 years of NOAA climate station data, the last frost date here varies by 36 days year to year — ranging from April 13 in warm years to May 19 in cold years. The growing season is trending longer by about 2.34 days per decade. Smyth County scores 56/100 (Moderate) on the Microclimate Index.
🌡️ Zone
6b (-5°F to 0°F min)
❄️ Last Frost
May 2
🍂 First Frost
October 12
📅 Growing Season
163 days
⛰️ Elevation
375 ft
🌧️ Annual Rainfall
51.2 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 | 3.9 in | 9 days | — | None |
| Feb | 3.9 in | 10 days | — | None |
| Mar | 4.6 in | 9 days | — | Low |
| Apr | 4.3 in | 7 days | — | Low |
| May | 4.1 in | 10 days | 0.2 in | Low |
| Jun | 4.2 in | 11 days | 0.1 in | Low |
| Jul | 5.4 in | 10 days | — | Low |
| Aug | 5.7 in | 11 days | — | Low |
| Sep | 3.5 in | 7 days | 0.8 in | Moderate |
| Oct | 3.3 in | 7 days | 1 in | Moderate |
| Nov | 3.7 in | 8 days | — | None |
| Dec | 4.5 in | 8 days | — | None |
Annual total: 51.1 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.
Smyth County Soil Profile
Soil Type
Silt Loam
Soil pH
5.3-6.8
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 19 | Oct 26 | 160 days |
| Cautious | May 11 | Oct 18 | 160 days |
| Average year | May 2 | Oct 12 | 163 days |
| Optimistic | Apr 24 | Oct 3 | 162 days |
| Aggressive (risky) | Apr 13 | Sep 17 | 157 days |
Not very — frost dates can vary by ±36 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 2.3 days per decade). Spring is arriving earlier than it used to. Good news for gardeners.
Gardening Difficulty Score
Smyth County presents some gardening challenges. Choose adapted varieties and plan around frost dates.
Local Gardening Help in Smyth 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 Smyth County's climate and soil.
County Extension Office
Smyth County Virginia Cooperative Extension (Virginia Tech / Virginia State) Extension Office
Phone: 540-231-5299
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 Smyth County
Finding local nurseries & garden centers in Smyth County
Why Buy Local
Local nurseries carry plants that are proven to grow in your area. Staff can give you advice specific to Smyth 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 Smyth County VA" or "garden center Smyth 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 Smyth County VA" or check your extension office and local parks department. Facebook groups like "Smyth County Gardeners" or "Virginia 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
14.5 hours
Summer solstice daylight
Shortest Day
9.5 hours
Winter solstice daylight
Peak Sun Hours
8.5 hr/day peak (summer)
Peak sun hours (green dashed line below) account for cloud cover — this is the usable direct sunlight your garden actually receives. Most vegetables need 6+ peak sun hours.
Onion tip: Your long summer days (14+ hours) support long-day onion varieties like Walla Walla, Sweet Spanish, and Ailsa Craig.
View detailed monthly data
| Month | Daylight Hours | Peak Sun Hours | Day Length |
|---|---|---|---|
| January | 9.7 hr | 4.7 hr | Short day |
| February | 10.6 hr | 5.5 hr | Short day |
| March | 11.7 hr | 6.3 hr | Short day |
| April | 13 hr | 8.2 hr | Neutral |
| May | 14 hr | 8.5 hr | Long day |
| June | 14.5 hr | 8.3 hr | Long day |
| July | 14.3 hr | 8.1 hr | Long day |
| August | 13.4 hr | 7.2 hr | Neutral |
| September | 12.2 hr | 7 hr | Neutral |
| October | 11 hr | 7.1 hr | Short day |
| November | 10 hr | 5.3 hr | Short day |
| December | 9.5 hr | 4.7 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
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 | 30°F | 39°F | ❄️ Dormant | ~36 weeks |
| Feb | 31°F | 40°F | ❄️ Dormant | ~36 weeks |
| Mar | 39°F | 42°F | ❄️ Dormant | ~36 weeks |
| Apr | 53°F | 51°F | ♻️ Active | ~14 weeks |
| May | 63°F | 62°F | ♻️ Active | ~14 weeks |
| Jun | 73°F | 70°F | 🔥 Peak | ~8 weeks |
| Jul | 82°F | 75°F | 🔥 Peak | ~8 weeks |
| Aug | 85°F | 78°F | 🔥 Peak | ~8 weeks |
| Sep | 75°F | 74°F | 🔥 Peak | ~8 weeks |
| Oct | 64°F | 66°F | ♻️ Active | ~14 weeks |
| Nov | 49°F | 56°F | 🐢 Slow | ~24 weeks |
| Dec | 39°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 Smyth 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
Moderate — watch for mildew and blight during wet periods.
Seasonal Risk
View 6 common pests in your area
| Pest | Risk Level | Peak Months |
|---|---|---|
| Aphids | Moderate | Apr, May, Jun, Jul, Aug, Sep |
| Japanese beetles | High | Jun, Jul, Aug |
| Squash vine borers | Moderate | Jun, Jul |
| Tomato hornworms | Moderate | Jun, Jul, Aug |
| Cucumber beetles | Moderate | May, Jun, Jul |
| Stink bugs | Low | Jun, Jul, Aug, Sep |
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
Cover Crops for Smyth County
Cover crops protect bare soil, fix nitrogen, suppress weeds, and improve soil structure — with county-specific planting dates.
Spring Cover Crops (3 options) — Build soil before the main growing season
| Crop | Plant By | Terminate | N-Fixing | Soil Benefit |
|---|---|---|---|---|
| Buckwheat | May 12 | Aug 10 | — | Rapid growth, attracts pollinators, suppresses weeds |
| Sorghum-sudan grass | May 11 | Aug 3 | — | Massive biomass, breaks compaction, suppresses nematodes |
| White clover | Apr 4 | Aug 3 | ✓ 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 | Jun 1 | Sep 21 | — | 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 16 | Apr 18 | ✓ Yes | Fixes nitrogen, good for heavy clay soils |
| Crimson clover | Aug 8 | Apr 11 | ✓ Yes | Fixes nitrogen, attracts pollinators in spring |
| Daikon radish | Aug 26 | Apr 18 | — | Deep taproot breaks compaction, excellent for clay soils |
| Hairy vetch | Jul 30 | Apr 11 | ✓ Yes | Excellent nitrogen fixer, good for depleted soils |
| Oats | Sep 5 | Apr 18 | — | Quick biomass, winterkills in cold zones — no spring tillage needed |
| Winter rye | Jul 4 | Apr 11 | — | Suppresses weeds, prevents erosion, breaks up compacted soil |
| Winter wheat | Jul 15 | Apr 18 | — | 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: 10 mph Summer: 8 mph
Fall: 7 mph Winter: 13 mph
Prevailing wind: SW. Moderate wind — consider a temporary windbreak for young seedlings.
Windbreak Benefit
4.8/10
Moderately beneficial — a simple fence or trellis can protect delicate crops from wind stress.
Frost Pocket Risk
Low
Relatively flat terrain (309 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
25,468 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, 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 51.1 inches of rain per year
- A 1,000 sq ft roof can collect roughly 25,468 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 Smyth County
Soil Type
Silt Loam
Soil pH 5.3–6.8 · 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. (51.2 in. annual rainfall)
Season Tips
163-day frost-free season
Start warm-season crops indoors and focus on short-season varieties. Cold frames extend your season by 3–4 weeks in fall.
Free Garden Planner
Plan your entire garden season — organize planting dates, track what you're growing, and know exactly when to start seeds, transplant, and harvest.
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 Smyth County
108 vegetables that grow well in Zone 6b with planting dates for Smyth County.
Show all 108 vegetables with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Acorn Squash | Mar 28 | May 9 | May 16 | Aug 8 – Sep 12 | 80–100 |
| Amaranth | Mar 7 | May 9 | May 16 | Aug 15 – Oct 3 | 90–120 |
| Arugula | Mar 28 | Apr 18 | May 2 | Jun 6 – Aug 8 | 30–50 |
| Asparagus | — | — | May 16 | — | 730–1095 |
| Beets | — | Apr 18 | — | Jun 13 – Jul 11 | 50–70 |
| Belgian Endive | Mar 28 | Apr 18 | May 2 | Aug 22 – Oct 17 | 110–150 |
| Bitter Melon | Mar 7 | May 9 | May 16 | Jul 18 – Aug 29 | 60–90 |
| Black Beans | — | May 9 | — | Aug 8 – Sep 26 | 90–120 |
| Bok Choy | Mar 28 | Apr 18 | May 2 | Jun 13 – Jul 18 | 40–60 |
| Broccoli | Mar 28 | Apr 18 | May 2 | Jul 4 – Aug 15 | 60–90 |
| Broccoli Rabe | Mar 28 | Apr 18 | May 2 | Jun 13 – Jul 18 | 40–60 |
| Brussels Sprouts | Mar 28 | Apr 18 | May 2 | Aug 1 – Sep 26 | 90–130 |
| Butternut Squash | Mar 28 | May 9 | May 16 | Aug 15 – Sep 19 | 85–110 |
| Cabbage | Mar 28 | Apr 18 | May 2 | Jul 4 – Aug 29 | 60–100 |
| Calabash | Mar 7 | May 9 | May 16 | Aug 8 – Oct 3 | 80–120 |
| Carrots | — | Apr 18 | — | Jun 20 – Jul 25 | 60–80 |
| Cauliflower | Mar 28 | Apr 18 | May 2 | Jun 27 – Aug 29 | 55–100 |
| Celeriac | Mar 28 | Apr 18 | May 2 | Aug 15 – Sep 19 | 100–120 |
| Celery | Mar 28 | Apr 18 | May 2 | Jul 25 – Sep 19 | 80–120 |
| Celtuce | Mar 28 | Apr 18 | May 2 | Jul 4 – Aug 15 | 60–90 |
| Chard | Mar 28 | Apr 18 | May 2 | Jun 27 – Aug 15 | 50–60 |
| Chickpeas | Mar 28 | Apr 18 | May 2 | Jul 25 – Sep 5 | 80–110 |
| Chicory | Mar 28 | Apr 18 | May 2 | Jul 4 – Aug 15 | 60–85 |
| Chinese Cabbage | Mar 28 | Apr 18 | May 2 | Jun 27 – Jul 25 | 50–70 |
| Christmas Lima Beans | Mar 7 | May 9 | May 16 | Aug 8 – Sep 12 | 80–100 |
| Collard Greens | Mar 28 | Apr 18 | May 2 | Jun 27 – Aug 29 | 55–75 |
| Corn | — | May 9 | — | Jul 11 – Sep 5 | 60–100 |
| Cowpeas | — | May 9 | — | Jul 11 – Aug 22 | 60–90 |
| Cress | Mar 28 | Apr 18 | May 2 | May 16 – Jun 6 | 14–21 |
| Crookneck Squash | Mar 28 | May 9 | May 16 | Jul 4 – Aug 1 | 45–60 |
| Crosne | — | Apr 18 | — | Sep 19 – Oct 31 | 150–200 |
| Cucumber | Mar 28 | May 9 | May 16 | Jul 11 – Sep 5 | 50–70 |
| Daikon | — | Apr 18 | — | Jun 13 – Jul 11 | 50–70 |
| Delicata Squash | Mar 28 | May 9 | May 16 | Aug 8 – Sep 12 | 80–100 |
| Edamame | — | May 9 | — | Jul 25 – Sep 5 | 75–100 |
| Eggplant | Feb 21 | May 9 | May 16 | Jul 25 – Sep 26 | 65–85 |
| Endive | Mar 28 | Apr 18 | May 2 | Jun 20 – Jul 25 | 45–65 |
| Escarole | Mar 28 | Apr 18 | May 2 | Jun 27 – Jul 25 | 50–70 |
| Fava Beans | Mar 28 | Apr 18 | May 2 | Jul 18 – Aug 29 | 75–100 |
| Fennel | Mar 7 | May 9 | May 16 | Jul 18 – Aug 29 | 60–90 |
| Garlic | — | — | — | — | 90–240 |
| Green Beans | — | May 9 | — | Jul 4 – Aug 29 | 50–65 |
| Horseradish | — | — | May 16 | Sep 19 – Nov 28 | 120–180 |
| Hot Peppers | Feb 21 | May 9 | May 16 | Jul 25 – Oct 31 | 70–120 |
| Hubbard Squash | Mar 28 | May 9 | May 16 | Aug 29 – Oct 3 | 100–120 |
| Kabocha | Mar 28 | May 9 | May 16 | Aug 15 – Sep 12 | 85–100 |
| Kai Lan | Mar 28 | Apr 18 | May 2 | Jun 20 – Jul 18 | 45–60 |
| Kale | Mar 28 | Apr 18 | May 2 | Jun 27 – Aug 22 | 50–70 |
| Kidney Beans | — | May 9 | — | Aug 8 – Sep 12 | 85–110 |
| Kohlrabi | Mar 28 | Apr 18 | May 2 | Jun 20 – Jul 25 | 45–65 |
| Komatsuna | Mar 28 | Apr 18 | May 2 | Jun 6 – Jul 11 | 35–50 |
| Leeks | Mar 28 | Apr 18 | May 2 | Aug 1 – Oct 17 | 90–150 |
| Lentils | Mar 28 | Apr 18 | May 2 | Jul 25 – Sep 5 | 80–110 |
| Lettuce | Mar 28 | Apr 18 | May 2 | Jun 6 – Aug 15 | 30–60 |
| Lima Beans | — | May 9 | — | Jul 11 – Aug 22 | 60–90 |
| Loofah | Mar 7 | May 9 | May 16 | Aug 29 – Oct 31 | 100–150 |
| Luffa | Mar 7 | May 9 | May 16 | Aug 15 – Oct 31 | 90–150 |
| Mache | Mar 28 | Apr 18 | May 2 | Jun 13 – Jul 18 | 40–60 |
| Melon | Mar 28 | May 9 | May 16 | Jul 25 – Sep 12 | 70–100 |
| Microgreens | Mar 28 | Apr 18 | May 2 | May 9 – Jun 6 | 7–21 |
| Mitsuba | Mar 28 | Apr 18 | Apr 25 | Jun 20 – Aug 15 | 50–70 |
| Mizuna | Mar 28 | Apr 18 | May 2 | Jun 6 – Jul 4 | 30–45 |
| Mustard Greens | Mar 28 | Apr 18 | May 2 | Jun 6 – Aug 8 | 30–50 |
| Napa Cabbage | Mar 28 | Apr 18 | May 2 | Jun 27 – Aug 1 | 55–75 |
| New Zealand Spinach | Mar 7 | May 9 | May 16 | Jul 11 – Aug 8 | 55–70 |
| Okra | Mar 7 | May 9 | May 16 | Jul 11 – Sep 5 | 50–65 |
| Onion | Mar 28 | Apr 18 | May 2 | Aug 1 – Sep 19 | 90–120 |
| Pac Choi | Mar 28 | Apr 18 | May 2 | Jun 13 – Jul 11 | 40–55 |
| Parsnip | — | Apr 18 | — | Aug 1 – Sep 12 | 100–130 |
| Patty Pan Squash | Mar 28 | May 9 | May 16 | Jul 4 – Aug 1 | 45–60 |
| Peas | Mar 28 | Apr 18 | May 2 | Jun 27 – Aug 22 | 55–70 |
| Peppers | Feb 21 | May 9 | May 16 | Jul 18 – Sep 26 | 60–90 |
| Pole Beans | Mar 7 | May 9 | May 16 | Jul 11 – Sep 5 | 55–70 |
| Potatoes | Mar 7 | May 9 | May 16 | Jul 25 – Oct 3 | 70–120 |
| Pumpkin | Mar 28 | May 9 | May 16 | Aug 15 – Oct 3 | 85–120 |
| Purslane | Mar 28 | Apr 18 | May 2 | Jun 13 – Jul 18 | 40–60 |
| Radicchio | Mar 28 | Apr 18 | May 2 | Jul 4 – Aug 8 | 60–80 |
| Radish | — | Apr 18 | — | May 16 – Jun 6 | 22–35 |
| Rhubarb | — | — | May 23 | — | 365–730 |
| Romanesco | Mar 28 | Apr 18 | May 2 | Jul 18 – Aug 29 | 75–100 |
| Rutabaga | — | Apr 18 | — | Jul 11 – Aug 15 | 80–100 |
| Salsify | — | Apr 18 | — | Aug 1 – Sep 12 | 100–130 |
| Savoy Cabbage | Mar 28 | Apr 18 | May 2 | Jul 11 – Sep 5 | 70–110 |
| Scallions | Mar 28 | Apr 18 | May 2 | Jun 27 – Jul 25 | 50–70 |
| Scarlet Runner Beans | Mar 7 | May 9 | May 16 | Jul 18 – Aug 22 | 60–80 |
| Shallot | Mar 28 | Apr 18 | May 2 | Aug 1 – Sep 19 | 90–120 |
| Shiso | Mar 14 | May 9 | May 16 | Jul 11 – Sep 5 | 50–70 |
| Snap Peas | Mar 7 | May 9 | May 16 | Jul 11 – Sep 5 | 55–70 |
| Snow Peas | Mar 28 | Apr 18 | May 2 | Jun 27 – Aug 22 | 50–65 |
| Soybeans | — | May 9 | — | Aug 1 – Sep 26 | 80–120 |
| Spaghetti Squash | Mar 28 | May 9 | May 16 | Aug 15 – Sep 12 | 85–100 |
| Spinach | Mar 28 | Apr 18 | May 2 | Jun 6 – Aug 8 | 35–50 |
| Squash (Summer) | Mar 28 | May 9 | May 16 | Jul 4 – Sep 5 | 45–65 |
| Squash (Winter) | Mar 28 | May 9 | May 16 | Aug 8 – Oct 3 | 80–120 |
| Sunchoke | — | — | May 16 | Sep 5 – Oct 31 | 110–150 |
| Sunflower | Mar 7 | May 9 | May 16 | Jul 25 – Sep 12 | 70–100 |
| Sweet Corn | — | May 9 | — | Jul 11 – Aug 22 | 60–90 |
| Sweet Potatoes | Mar 7 | May 9 | May 16 | Aug 15 – Oct 3 | 90–120 |
| Tatsoi | Mar 28 | Apr 18 | May 2 | Jun 6 – Jul 11 | 35–50 |
| Tomatillo | Mar 7 | May 9 | May 16 | Jul 18 – Sep 26 | 60–85 |
| Tomatoes | Mar 7 | May 9 | May 16 | Jul 18 – Sep 26 | 60–85 |
| Turnip | — | Apr 18 | — | May 30 – Jul 4 | 40–60 |
| Watercress | Mar 28 | Apr 18 | May 2 | Jun 13 – Jul 18 | 40–60 |
| Watermelon | Mar 28 | May 9 | May 16 | Jul 25 – Sep 12 | 70–100 |
| Wax Beans | — | May 9 | — | Jul 4 – Aug 29 | 50–65 |
| Winter Melon | Mar 7 | May 9 | May 16 | Aug 15 – Oct 3 | 90–120 |
| Yard Long Beans | Mar 7 | May 9 | May 16 | Jul 11 – Aug 22 | 55–80 |
| Zucchini | Mar 28 | May 9 | May 16 | Jul 4 – Aug 29 | 45–60 |
🍓 Fruits to Grow in Smyth County
27 fruits that grow well in Zone 6b with planting dates for Smyth County.
Show all 27 fruits with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Alpine Strawberries | — | — | May 23 | Aug 22 – Dec 5 | 90–180 |
| Aronia | — | — | May 23 | — | 730–1095 |
| Blackberries | — | — | May 23 | — | 365–730 |
| Blueberries | — | — | May 23 | — | 730–1095 |
| Boysenberries | — | — | May 23 | — | 365–730 |
| Cantaloupe | — | — | May 23 | Aug 1 – Sep 5 | 70–90 |
| Che Fruit | — | — | May 23 | — | 1095–1825 |
| Cranberries | — | — | May 23 | — | 730–1095 |
| Currants | — | — | May 23 | — | 730–1095 |
| Elderberries | — | — | May 23 | — | 730–1095 |
| Goji Berries | — | — | May 23 | — | 730–1095 |
| Gooseberries | — | — | May 23 | — | 730–1095 |
| Grapes | — | — | May 23 | — | 730–1095 |
| Ground Cherry | — | — | May 23 | Aug 1 – Sep 26 | 65–80 |
| Hardy Kiwi | — | — | May 23 | — | 1095–1825 |
| Haskaps | — | — | May 23 | — | 730–1095 |
| Honeydew | — | — | May 23 | Aug 15 – Sep 26 | 80–110 |
| Jostaberry | — | — | May 23 | — | 730–1095 |
| Lingonberries | — | — | May 23 | — | 730–1095 |
| Medlar | — | — | May 23 | — | 1095–1825 |
| Mulberries | — | — | May 23 | — | 730–1825 |
| Pawpaw | — | — | May 23 | — | 1095–2555 |
| Persimmon | — | — | May 23 | — | 1095–2555 |
| Quince | — | — | May 23 | — | 1095–1825 |
| Raspberries | — | — | May 23 | — | 365–730 |
| Serviceberries | — | — | May 23 | — | 730–1095 |
| Strawberries | — | — | May 23 | Aug 22 – Dec 5 | 90–365 |
🌿 Herbs to Grow in Smyth County
38 herbs that grow well in Zone 6b with planting dates for Smyth County.
Show all 38 herbs with planting dates
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Angelica | Mar 28 | Apr 18 | Apr 25 | — | 365–730 |
| Anise | Mar 28 | Apr 18 | Apr 25 | Jul 25 – Oct 10 | 90–120 |
| Basil | Mar 14 | May 9 | May 16 | Jul 11 – Sep 12 | 50–75 |
| Bee Balm | — | — | May 9 | Aug 8 – Oct 24 | 90–120 |
| Borage | Mar 28 | Apr 18 | Apr 25 | Jun 20 – Aug 8 | 50–60 |
| Caraway | Mar 28 | Apr 18 | Apr 25 | — | 365–450 |
| Catnip | — | — | May 9 | Jul 11 – Sep 12 | 60–80 |
| Chamomile | Mar 28 | Apr 18 | Apr 25 | Jun 27 – Sep 5 | 60–90 |
| Chervil | Mar 28 | Apr 18 | Apr 25 | Jun 6 – Aug 8 | 40–60 |
| Chives | — | — | May 9 | Jul 11 – Sep 19 | 60–90 |
| Cilantro | Mar 28 | Apr 18 | Apr 25 | Jun 6 – Aug 8 | 40–60 |
| Comfrey | — | — | May 9 | Jul 11 – Sep 19 | 60–90 |
| Cumin | Mar 28 | Apr 18 | Apr 25 | Aug 8 – Oct 10 | 100–120 |
| Dill | Mar 28 | Apr 18 | Apr 25 | Jun 6 – Aug 8 | 40–60 |
| Echinacea | — | — | May 9 | Sep 12 – Nov 21 | 120–180 |
| Epazote | Mar 14 | May 9 | May 16 | Jul 4 – Aug 29 | 45–60 |
| Fennel (herb) | Mar 28 | Apr 18 | Apr 25 | Jun 27 – Sep 5 | 60–90 |
| Feverfew | — | — | May 9 | Aug 8 – Oct 24 | 90–120 |
| Garlic Chives | — | — | May 9 | Jul 11 – Sep 19 | 60–90 |
| Horehound | — | — | May 9 | Jul 25 – Sep 19 | 75–90 |
| Hyssop | — | — | May 9 | Jul 18 – Sep 19 | 70–90 |
| Lavender | — | — | May 9 | Aug 8 – Nov 21 | 90–200 |
| Lemon Balm | — | — | May 9 | Jul 11 – Aug 29 | 60–70 |
| Lemon Thyme | — | — | May 9 | Jul 18 – Sep 19 | 70–90 |
| Lovage | — | — | May 9 | Jul 18 – Sep 19 | 70–90 |
| Marjoram | — | — | May 9 | Jul 11 – Sep 19 | 60–90 |
| Mint | — | — | May 9 | Jul 11 – Sep 19 | 60–90 |
| Oregano | — | — | May 9 | Jul 11 – Sep 19 | 60–90 |
| Parsley | Mar 28 | Apr 18 | Apr 25 | Jun 27 – Aug 29 | 60–80 |
| Rue | — | — | May 9 | Jul 18 – Sep 19 | 70–90 |
| Sage | — | — | May 9 | Jul 25 – Sep 19 | 75–90 |
| Savory | — | — | May 9 | Jul 4 – Aug 29 | 50–70 |
| Sorrel | Mar 28 | Apr 18 | Apr 25 | Jun 6 – Aug 8 | 40–60 |
| Tarragon | — | — | May 9 | Jul 11 – Sep 19 | 60–90 |
| Thai Basil | Mar 14 | May 9 | May 16 | Jul 11 – Sep 12 | 50–75 |
| Thyme | — | — | May 9 | Jul 18 – Sep 19 | 70–90 |
| Valerian | — | — | May 9 | Sep 12 – Nov 21 | 120–180 |
| Yarrow | — | — | May 9 | Aug 8 – Oct 24 | 90–120 |
Monthly Planting Guide for Smyth County
Gardening Guides & Resources
Helpful guides from The Ultimate Homestead to improve your garden in Smyth County.
Frequently Asked Questions
What planting zone is Smyth County, VA?
Smyth County is in USDA Hardiness Zone 6b. This zone classification determines which perennial plants survive winter and sets the baseline for frost timing across the county.
When is the last frost in Smyth County, VA?
Based on 31 years of NOAA weather station data, the median last spring frost in Smyth County falls around May 2. In 8 out of 10 years, last frost lands between April 13 and May 19 — a 36-day window of variability. Use May 19 as your conservative safe-to-plant date for frost-sensitive crops.
When is the first fall frost in Smyth County, VA?
The median first fall frost in Smyth County arrives around October 12. In cold years it can arrive as early as September 17; in mild years as late as October 26. Harvest or protect frost-sensitive crops — tomatoes, peppers, basil, squash — before this date.
How long is the growing season in Smyth County?
Smyth County has a frost-free growing season of approximately 163 days. This is enough time for most warm-season crops including tomatoes, peppers, and squash with proper timing. Climate records show the growing season is trending longer by about 2.34 days per decade.
What is the soil like in Smyth County for gardening?
Smyth County has predominantly Silt Loam soil with a pH range of 5.3–6.8 and Moderately Well Drained drainage. Most vegetables and herbs grow well with standard composting and seasonal soil amendment.
What is grown commercially in Smyth County?
Smyth County has commercial agriculture that includes Soybeans, Corn, Poultry, Hay. These crops reflect the local climate and soil conditions — what succeeds commercially often translates well to home gardens in the same area.
Is Smyth County a good location for home gardening?
Smyth County scores 56/100 (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.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Smyth County gardeners in Zone 6b organize planting dates, track what's growing, and never miss a planting window.
Get Your Free Garden Planner →Free download. Plan your entire garden season in minutes.
