Frost Dates for Maryville, TN 37803
Last spring frost April 16 · First fall frost October 27 · 194 frost-free days · USDA Zone 7b
ZIP 37803 has about 33,800 people, the largest of 3 ZIP codes in Maryville.
Long season: 194 frost-free days. Spring frost risk spans April 3–April 28 (25 days). Fall frost risk spans October 8–November 14 (37 days).
Frost probability for 37803
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | April 28 | April 16 | April 3 |
| Fall (first frost) | October 8 | October 27 | November 14 |
Dates come from NOAA 1971–2000 freeze probabilities at KNOXVILLE EXP STN (25.3 km away); the 50% date is the median year.
Frost dates by ZIP code in Maryville, TN
| ZIP | Last spring frost (50%) | First fall frost (50%) | Zone |
|---|---|---|---|
| 37803 | April 16 | October 27 | 7b |
| 37801 | April 10 | October 27 | 7b |
| 37804 | April 16 | October 22 | 7b |
Which crops fit a 194-day season in Maryville
In Maryville (194 frost-free days, a long season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.
| Crop | Start indoors | Plant out / sow | Days you have | Verdict | Last sow date |
|---|---|---|---|---|---|
| Tomato | Mar 12 | Apr 30–May 7 | 152 | fits: 80 days to maturity, 152 available after Apr 30. | Jun 27 |
| Pepper | Mar 5 | Apr 30–May 7 | 152 | fits: 75 days to maturity, 152 available after Apr 30. | Jul 2 |
| Lettuce | Feb 19 | Mar 19–Mar 26 | 229 | two-plantings: Plant Mar 19 and again by Sep 5; both mature before Nov 3. | Sep 5 |
| Carrots | — | Mar 26–Apr 2 | 236 | fits: 70 days to maturity, 236 available after Mar 26. | Aug 25 |
| Cucumber | Mar 26 | Apr 30–May 7 | 166 | two-plantings: Plant Apr 30 and again by Jul 31; both mature before Oct 13. | Jul 31 |
| Beans | — | Apr 23–May 7 | 180 | two-plantings: Plant Apr 23 and again by Aug 7; both mature before Oct 20. | Aug 7 |
| Peas | — | Feb 19–Apr 30 | 257 | fits: 65 days to maturity, 257 available after Feb 19. | Aug 16 |
| Zucchini | Apr 2 | Apr 30–May 7 | 166 | two-plantings: Plant Apr 30 and again by Aug 5; both mature before Oct 13. | Aug 5 |
| Onion | Jan 22 | Mar 19–Apr 2 | 229 | fits: 100 days to maturity, 229 available after Mar 19. | — |
| Spinach | — | Feb 19–Apr 9 | 271 | two-plantings: Plant Feb 19 and again by Sep 24; both mature before Nov 17. | Sep 24 |
| Kale | Feb 5 | Mar 19–Apr 2 | 243 | two-plantings: Plant Mar 19 and again by Sep 9; both mature before Nov 17. | Sep 9 |
| Broccoli | Feb 19 | Mar 19–Apr 2 | 229 | fits: 80 days to maturity, 229 available after Mar 19. | Aug 1 |
| Cabbage | Feb 19 | Mar 19–Apr 2 | 243 | fits: 70 days to maturity, 243 available after Mar 19. | Aug 25 |
| Radish | — | Feb 19–May 14 | 257 | two-plantings: Plant Feb 19 and again by Sep 25; both mature before Nov 3. | Sep 25 |
| Beets | — | Feb 19–May 14 | 257 | two-plantings: Plant Feb 19 and again by Aug 26; both mature before Nov 3. | Aug 26 |
| Potatoes | — | Apr 2–Apr 9 | 215 | fits: 90 days to maturity, 215 available after Apr 2. | — |
| Garlic | — | Oct 27 | 299 | overwinter: Plant Oct 27 to Nov 17; harvest the following summer. | Nov 17 |
| Strawberry | — | Mar 12–May 7 | 250 | perennial: A perennial: plant Mar 12; it fruits from the following year and keeps producing for several years. | — |
| Corn | Mar 19 | Apr 23–Apr 30 | 166 | fits: 75 days to maturity, 166 available after Apr 23. | Jul 9 |
| Pumpkin | Apr 2 | Apr 30–Apr 30 | 159 | fits: 100 days to maturity, 159 available after Apr 30. | Jun 14 |
| Cauliflower | Mar 5 | Apr 9–Apr 23 | 208 | fits: 75 days to maturity, 208 available after Apr 9. | Aug 6 |
| Swiss Chard | Feb 19 | Apr 2–Apr 2 | 215 | two-plantings: Plant Apr 2 and again by Aug 26; both mature before Nov 3. | Aug 26 |
| Arugula | — | Feb 19–May 14 | 271 | two-plantings: Plant Feb 19 and again by Sep 24; both mature before Nov 17. | Sep 24 |
| Brussel Sprouts | Feb 19 | Mar 19–Apr 2 | 243 | fits: 100 days to maturity, 243 available after Mar 19. | Jul 26 |
| Butternut Squash | Apr 2 | Apr 30–May 7 | 159 | fits: 100 days to maturity, 159 available after Apr 30. | Jun 14 |
| Eggplant | Feb 26 | Apr 30–May 7 | 152 | fits: 70 days to maturity, 152 available after Apr 30. | Jul 7 |
| Okra | Mar 19 | Apr 23–Apr 30 | 173 | two-plantings: Plant Apr 23 and again by Aug 5; both mature before Oct 13. | Aug 5 |
| Basil | Mar 12 | May 7–May 7 | 159 | two-plantings: Plant May 7 and again by Jul 31; both mature before Oct 13. | Jul 31 |
| Cilantro | — | Mar 19–Apr 9 | 229 | two-plantings: Plant Mar 19 and again by Aug 31; both mature before Nov 3. | Aug 31 |
| Parsley | Feb 5 | Apr 23–Apr 30 | 194 | fits: 70 days to maturity, 194 available after Apr 23. | Aug 11 |
| Celery | Feb 5 | Apr 23–May 7 | 194 | fits: 120 days to maturity, 194 available after Apr 23. | Jun 22 |
| Scallions | Feb 5 | Mar 19–Apr 2 | 243 | two-plantings: Plant Mar 19 and again by Sep 4; both mature before Nov 17. | Sep 4 |
| Turnip | — | Mar 19–Apr 2 | 243 | two-plantings: Plant Mar 19 and again by Sep 14; both mature before Nov 17. | Sep 14 |
| Kohlrabi | — | Mar 5–Mar 19 | 257 | two-plantings: Plant Mar 5 and again by Sep 9; both mature before Nov 17. | Sep 9 |
| Bok Choy | Mar 19 | Apr 9–Apr 16 | 208 | two-plantings: Plant Apr 9 and again by Sep 5; both mature before Nov 3. | Sep 5 |
| Collards | Feb 5 | Mar 19–Apr 2 | 243 | two-plantings: Plant Mar 19 and again by Sep 4; both mature before Nov 17. | Sep 4 |
| Cantaloupe | Apr 2 | Apr 30–May 7 | 152 | fits: 85 days to maturity, 152 available after Apr 30. | Jun 22 |
| Chives | Jan 22 | Apr 23–Apr 30 | 208 | fits: 90 days to maturity, 208 available after Apr 23. | — |
| Dill | — | Feb 19–May 14 | 257 | two-plantings: Plant Feb 19 and again by Aug 26; both mature before Nov 3. | Aug 26 |
| Oregano | Feb 5 | Apr 23–Apr 30 | 208 | fits: 80 days to maturity, 208 available after Apr 23. | — |
| Rosemary | Jan 22 | Apr 23–Apr 30 | 194 | fits: 80 days to maturity, 194 available after Apr 23. | — |
| Sage | Feb 19 | Apr 23–Apr 30 | 208 | fits: 75 days to maturity, 208 available after Apr 23. | — |
| Thyme | Feb 5 | Apr 23–Apr 30 | 208 | fits: 90 days to maturity, 208 available after Apr 23. | — |
| Calendula | Mar 5 | Apr 2–Apr 16 | 215 | two-plantings: Plant Apr 2 and again by Aug 31; both mature before Nov 3. | Aug 31 |
| Cosmos | Mar 19 | Apr 16–Apr 30 | 180 | two-plantings: Plant Apr 16 and again by Jul 31; both mature before Oct 13. | Jul 31 |
| Lavender | Jan 22 | Apr 16–Apr 30 | 215 | fits: 90 days to maturity, 215 available after Apr 16. | — |
| Marigolds | Mar 5 | Apr 16–Apr 23 | 180 | two-plantings: Plant Apr 16 and again by Aug 10; both mature before Oct 13. | Aug 10 |
| Melons | Apr 2 | Apr 30–May 7 | 152 | fits: 85 days to maturity, 152 available after Apr 30. | Jun 22 |
| Mint | — | Apr 16–Apr 30 | 215 | fits: 90 days to maturity, 215 available after Apr 16. | — |
| Nasturtiums | Mar 19 | Apr 16–Apr 23 | 180 | two-plantings: Plant Apr 16 and again by Aug 5; both mature before Oct 13. | Aug 5 |
| Pole Beans | — | Apr 23–May 7 | 173 | fits: 65 days to maturity, 173 available after Apr 23. | Jul 26 |
| Spaghetti Squash | Apr 2 | Apr 30–May 7 | 159 | fits: 90 days to maturity, 159 available after Apr 30. | Jun 24 |
| Sunflowers | — | Apr 16–Apr 30 | 180 | fits: 70 days to maturity, 180 available after Apr 16. | Jul 21 |
| Tomatillos | Feb 19 | Apr 23–Apr 30 | 159 | fits: 75 days to maturity, 159 available after Apr 23. | Jul 2 |
| Watermelon | Apr 2 | Apr 23–Apr 30 | 159 | fits: 80 days to maturity, 159 available after Apr 23. | Jun 27 |
| Yellow Squash | Apr 2 | Apr 30–May 7 | 166 | two-plantings: Plant Apr 30 and again by Aug 5; both mature before Oct 13. | Aug 5 |
| Zinnias | Mar 19 | Apr 16–Apr 30 | 180 | two-plantings: Plant Apr 16 and again by Jul 31; both mature before Oct 13. | Jul 31 |
Month by month in Maryville
| Month | What to do |
|---|---|
| January | Start indoors: Chives (Jan 22), Lavender (Jan 22), Onion (Jan 22), Rosemary (Jan 22). |
| February | Start indoors: Celery (Feb 5), Collards (Feb 5), Kale (Feb 5), Oregano (Feb 5), Parsley (Feb 5), Scallions (Feb 5), +9 more. Direct sow from: Arugula (Feb 19), Beets (Feb 19), Dill (Feb 19), Peas (Feb 19), Radish (Feb 19), Spinach (Feb 19). |
| March | Start indoors: Calendula (Mar 5), Cauliflower (Mar 5), Marigolds (Mar 5), Pepper (Mar 5), Basil (Mar 12), Tomato (Mar 12), +7 more. Direct sow from: Kohlrabi (Mar 5), Cilantro (Mar 19), Turnip (Mar 19), Carrots (Mar 26). Transplant from: Broccoli (Mar 19), Brussel Sprouts (Mar 19), Cabbage (Mar 19), Collards (Mar 19), Kale (Mar 19), Lettuce (Mar 19), +2 more. Plant: Strawberry (Mar 12). |
| April | Start indoors: Butternut Squash (Apr 2), Cantaloupe (Apr 2), Melons (Apr 2), Pumpkin (Apr 2), Spaghetti Squash (Apr 2), Watermelon (Apr 2), +2 more. Direct sow from: Potatoes (Apr 2), Sunflowers (Apr 16), Beans (Apr 23), Pole Beans (Apr 23). Transplant from: Calendula (Apr 2), Swiss Chard (Apr 2), Bok Choy (Apr 9), Cauliflower (Apr 9), Cosmos (Apr 16), Lavender (Apr 16), +26 more. Last frost around April 16. |
| May | Transplant from: Basil (May 7). |
| June | Last sowing dates: Butternut Squash (Jun 14), Pumpkin (Jun 14), Cantaloupe (Jun 22), Celery (Jun 22), Melons (Jun 22), Spaghetti Squash (Jun 24), +2 more. |
| July | Last sowing dates: Pepper (Jul 2), Tomatillos (Jul 2), Eggplant (Jul 7), Corn (Jul 9), Sunflowers (Jul 21), Brussel Sprouts (Jul 26), +5 more. |
| August | Last sowing dates: Broccoli (Aug 1), Nasturtiums (Aug 5), Okra (Aug 5), Yellow Squash (Aug 5), Zucchini (Aug 5), Cauliflower (Aug 6), +11 more. |
| September | Last sowing dates: Collards (Sep 4), Scallions (Sep 4), Bok Choy (Sep 5), Lettuce (Sep 5), Kale (Sep 9), Kohlrabi (Sep 9), +4 more. |
| October | Direct sow from: Garlic (Oct 27). First frost around October 27. |
| November | Last sowing dates: Garlic (Nov 17). |
| December | Clean up spent plants. Add compost to beds. Rest, review, and plan next year's garden. |
Frequently Asked Questions
What is the last frost date for Maryville, TN (ZIP 37803)?
The median last spring frost date for Maryville, TN (ZIP code 37803) is around April 16. This is the 50th-percentile date — meaning half of all years see frost end before this date. Use the 10% and 90% dates to understand the full range of risk in your area. One year in ten frost ends before April 3; one in ten it runs past April 28.
What is the first fall frost date in Maryville, TN?
The median first fall frost date for Maryville, TN is around October 27. Plan to harvest or protect frost-sensitive crops like tomatoes and peppers at least a week before this date to avoid losses. The first frost arrives around October 8 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Maryville, TN?
The frost-free growing season in Maryville is about 194 days. This window — from your last spring frost to your first fall frost — is when warm-season vegetables thrive. Cold-hardy crops like kale, spinach, and peas can extend your season by weeks on either side. In Maryville (194 frost-free days, a long season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.
What USDA hardiness zone is Maryville, TN?
Maryville, TN is in USDA hardiness zone 7b (2023 USDA Plant Hardiness Zone Map). Zones come from the average coldest winter temperature, so they tell you which perennials survive the winter; the frost dates on this page tell you when to plant.
When should I start tomatoes indoors in Maryville, TN?
Start tomatoes indoors Mar 12 and plant out Apr 30 in Maryville. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Maryville?
Two: plant Mar 19 and again by Sep 5; both mature before Nov 3.
When do I plant garlic in Maryville?
Oct 27 to Nov 17; it overwinters and is ready the following summer.
Can I get two tomato crops in Maryville?
Yes: plant out Apr 30 for a summer crop, and set out a second round of transplants by Jun 27 for a fall crop.
Nearby and related
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