Frost Dates for Warrenton, VA 20187
Last spring frost April 22 · First fall frost October 23 · 184 frost-free days · USDA Zone 7a
ZIP 20187 has about 19,000 people, the largest of 2 ZIP codes in Warrenton.
Long season: 184 frost-free days. Spring frost risk spans April 6–May 7 (31 days). Fall frost risk spans October 7–November 8 (32 days).
Frost probability for 20187
| Frost | 10% | 50% | 90% |
|---|---|---|---|
| Spring (last frost) | May 7 | April 22 | April 6 |
| Fall (first frost) | October 7 | October 23 | November 8 |
Dates come from NOAA 1971–2000 freeze probabilities at MT WX (40.5 km away); the 50% date is the median year.
Frost dates by ZIP code in Warrenton, VA
| ZIP | Last spring frost (50%) | First fall frost (50%) | Zone |
|---|---|---|---|
| 20187 | April 22 | October 23 | 7a |
| 20186 | April 22 | October 23 | 7a |
Which crops fit a 184-day season in Warrenton
In Warrenton (184 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 18 | May 6–May 13 | 142 | fits: 80 days to maturity, 142 available after May 6. | Jun 23 |
| Pepper | Mar 11 | May 6–May 13 | 142 | fits: 75 days to maturity, 142 available after May 6. | Jun 28 |
| Lettuce | Feb 25 | Mar 25–Apr 1 | 219 | two-plantings: Plant Mar 25 and again by Sep 1; both mature before Oct 30. | Sep 1 |
| Carrots | — | Apr 1–Apr 8 | 226 | fits: 70 days to maturity, 226 available after Apr 1. | Aug 21 |
| Cucumber | Apr 1 | May 6–May 13 | 156 | two-plantings: Plant May 6 and again by Jul 27; both mature before Oct 9. | Jul 27 |
| Beans | — | Apr 29–May 13 | 170 | two-plantings: Plant Apr 29 and again by Aug 3; both mature before Oct 16. | Aug 3 |
| Peas | — | Feb 25–May 6 | 247 | fits: 65 days to maturity, 247 available after Feb 25. | Aug 12 |
| Zucchini | Apr 8 | May 6–May 13 | 156 | two-plantings: Plant May 6 and again by Aug 1; both mature before Oct 9. | Aug 1 |
| Onion | Jan 28 | Mar 25–Apr 8 | 219 | fits: 100 days to maturity, 219 available after Mar 25. | — |
| Spinach | — | Feb 25–Apr 15 | 261 | two-plantings: Plant Feb 25 and again by Sep 20; both mature before Nov 13. | Sep 20 |
| Kale | Feb 11 | Mar 25–Apr 8 | 233 | two-plantings: Plant Mar 25 and again by Sep 5; both mature before Nov 13. | Sep 5 |
| Broccoli | Feb 25 | Mar 25–Apr 8 | 219 | fits: 80 days to maturity, 219 available after Mar 25. | Jul 28 |
| Cabbage | Feb 25 | Mar 25–Apr 8 | 233 | fits: 70 days to maturity, 233 available after Mar 25. | Aug 21 |
| Radish | — | Feb 25–May 20 | 247 | two-plantings: Plant Feb 25 and again by Sep 21; both mature before Oct 30. | Sep 21 |
| Beets | — | Feb 25–May 20 | 247 | two-plantings: Plant Feb 25 and again by Aug 22; both mature before Oct 30. | Aug 22 |
| Potatoes | — | Apr 8–Apr 15 | 205 | fits: 90 days to maturity, 205 available after Apr 8. | — |
| Garlic | — | Oct 23 | 289 | overwinter: Plant Oct 23 to Nov 13; harvest the following summer. | Nov 13 |
| Strawberry | — | Mar 18–May 13 | 240 | perennial: A perennial: plant Mar 18; it fruits from the following year and keeps producing for several years. | — |
| Corn | Mar 25 | Apr 29–May 6 | 156 | fits: 75 days to maturity, 156 available after Apr 29. | Jul 5 |
| Pumpkin | Apr 8 | May 6–May 6 | 149 | fits: 100 days to maturity, 149 available after May 6. | Jun 10 |
| Cauliflower | Mar 11 | Apr 15–Apr 29 | 198 | fits: 75 days to maturity, 198 available after Apr 15. | Aug 2 |
| Swiss Chard | Feb 25 | Apr 8–Apr 8 | 205 | two-plantings: Plant Apr 8 and again by Aug 22; both mature before Oct 30. | Aug 22 |
| Arugula | — | Feb 25–May 20 | 261 | two-plantings: Plant Feb 25 and again by Sep 20; both mature before Nov 13. | Sep 20 |
| Brussel Sprouts | Feb 25 | Mar 25–Apr 8 | 233 | fits: 100 days to maturity, 233 available after Mar 25. | Jul 22 |
| Butternut Squash | Apr 8 | May 6–May 13 | 149 | fits: 100 days to maturity, 149 available after May 6. | Jun 10 |
| Eggplant | Mar 4 | May 6–May 13 | 142 | fits: 70 days to maturity, 142 available after May 6. | Jul 3 |
| Okra | Mar 25 | Apr 29–May 6 | 163 | two-plantings: Plant Apr 29 and again by Aug 1; both mature before Oct 9. | Aug 1 |
| Basil | Mar 18 | May 13–May 13 | 149 | two-plantings: Plant May 13 and again by Jul 27; both mature before Oct 9. | Jul 27 |
| Cilantro | — | Mar 25–Apr 15 | 219 | two-plantings: Plant Mar 25 and again by Aug 27; both mature before Oct 30. | Aug 27 |
| Parsley | Feb 11 | Apr 29–May 6 | 184 | fits: 70 days to maturity, 184 available after Apr 29. | Aug 7 |
| Celery | Feb 11 | Apr 29–May 13 | 184 | fits: 120 days to maturity, 184 available after Apr 29. | Jun 18 |
| Scallions | Feb 11 | Mar 25–Apr 8 | 233 | two-plantings: Plant Mar 25 and again by Aug 31; both mature before Nov 13. | Aug 31 |
| Turnip | — | Mar 25–Apr 8 | 233 | two-plantings: Plant Mar 25 and again by Sep 10; both mature before Nov 13. | Sep 10 |
| Kohlrabi | — | Mar 11–Mar 25 | 247 | two-plantings: Plant Mar 11 and again by Sep 5; both mature before Nov 13. | Sep 5 |
| Bok Choy | Mar 25 | Apr 15–Apr 22 | 198 | two-plantings: Plant Apr 15 and again by Sep 1; both mature before Oct 30. | Sep 1 |
| Collards | Feb 11 | Mar 25–Apr 8 | 233 | two-plantings: Plant Mar 25 and again by Aug 31; both mature before Nov 13. | Aug 31 |
| Cantaloupe | Apr 8 | May 6–May 13 | 142 | fits: 85 days to maturity, 142 available after May 6. | Jun 18 |
| Chives | Jan 28 | Apr 29–May 6 | 198 | fits: 90 days to maturity, 198 available after Apr 29. | — |
| Dill | — | Feb 25–May 20 | 247 | two-plantings: Plant Feb 25 and again by Aug 22; both mature before Oct 30. | Aug 22 |
| Oregano | Feb 11 | Apr 29–May 6 | 198 | fits: 80 days to maturity, 198 available after Apr 29. | — |
| Rosemary | Jan 28 | Apr 29–May 6 | 184 | fits: 80 days to maturity, 184 available after Apr 29. | — |
| Sage | Feb 25 | Apr 29–May 6 | 198 | fits: 75 days to maturity, 198 available after Apr 29. | — |
| Thyme | Feb 11 | Apr 29–May 6 | 198 | fits: 90 days to maturity, 198 available after Apr 29. | — |
| Calendula | Mar 11 | Apr 8–Apr 22 | 205 | two-plantings: Plant Apr 8 and again by Aug 27; both mature before Oct 30. | Aug 27 |
| Cosmos | Mar 25 | Apr 22–May 6 | 170 | two-plantings: Plant Apr 22 and again by Jul 27; both mature before Oct 9. | Jul 27 |
| Lavender | Jan 28 | Apr 22–May 6 | 205 | fits: 90 days to maturity, 205 available after Apr 22. | — |
| Marigolds | Mar 11 | Apr 22–Apr 29 | 170 | two-plantings: Plant Apr 22 and again by Aug 6; both mature before Oct 9. | Aug 6 |
| Melons | Apr 8 | May 6–May 13 | 142 | fits: 85 days to maturity, 142 available after May 6. | Jun 18 |
| Mint | — | Apr 22–May 6 | 205 | fits: 90 days to maturity, 205 available after Apr 22. | — |
| Nasturtiums | Mar 25 | Apr 22–Apr 29 | 170 | two-plantings: Plant Apr 22 and again by Aug 1; both mature before Oct 9. | Aug 1 |
| Pole Beans | — | Apr 29–May 13 | 163 | fits: 65 days to maturity, 163 available after Apr 29. | Jul 22 |
| Spaghetti Squash | Apr 8 | May 6–May 13 | 149 | fits: 90 days to maturity, 149 available after May 6. | Jun 20 |
| Sunflowers | — | Apr 22–May 6 | 170 | fits: 70 days to maturity, 170 available after Apr 22. | Jul 17 |
| Tomatillos | Feb 25 | Apr 29–May 6 | 149 | fits: 75 days to maturity, 149 available after Apr 29. | Jun 28 |
| Watermelon | Apr 8 | Apr 29–May 6 | 149 | fits: 80 days to maturity, 149 available after Apr 29. | Jun 23 |
| Yellow Squash | Apr 8 | May 6–May 13 | 156 | two-plantings: Plant May 6 and again by Aug 1; both mature before Oct 9. | Aug 1 |
| Zinnias | Mar 25 | Apr 22–May 6 | 170 | two-plantings: Plant Apr 22 and again by Jul 27; both mature before Oct 9. | Jul 27 |
Month by month in Warrenton
| Month | What to do |
|---|---|
| January | Start indoors: Chives (Jan 28), Lavender (Jan 28), Onion (Jan 28), Rosemary (Jan 28). |
| February | Start indoors: Celery (Feb 11), Collards (Feb 11), Kale (Feb 11), Oregano (Feb 11), Parsley (Feb 11), Scallions (Feb 11), +8 more. Direct sow from: Arugula (Feb 25), Beets (Feb 25), Dill (Feb 25), Peas (Feb 25), Radish (Feb 25), Spinach (Feb 25). |
| March | Start indoors: Eggplant (Mar 4), Calendula (Mar 11), Cauliflower (Mar 11), Marigolds (Mar 11), Pepper (Mar 11), Basil (Mar 18), +7 more. Direct sow from: Kohlrabi (Mar 11), Cilantro (Mar 25), Turnip (Mar 25). Transplant from: Broccoli (Mar 25), Brussel Sprouts (Mar 25), Cabbage (Mar 25), Collards (Mar 25), Kale (Mar 25), Lettuce (Mar 25), +2 more. Plant: Strawberry (Mar 18). |
| April | Start indoors: Cucumber (Apr 1), Butternut Squash (Apr 8), Cantaloupe (Apr 8), Melons (Apr 8), Pumpkin (Apr 8), Spaghetti Squash (Apr 8), +3 more. Direct sow from: Carrots (Apr 1), Potatoes (Apr 8), Sunflowers (Apr 22), Beans (Apr 29), Pole Beans (Apr 29). Transplant from: Calendula (Apr 8), Swiss Chard (Apr 8), Bok Choy (Apr 15), Cauliflower (Apr 15), Cosmos (Apr 22), Lavender (Apr 22), +15 more. Last frost around April 22. |
| May | Transplant from: Butternut Squash (May 6), Cantaloupe (May 6), Cucumber (May 6), Eggplant (May 6), Melons (May 6), Pepper (May 6), +6 more. |
| June | Last sowing dates: Butternut Squash (Jun 10), Pumpkin (Jun 10), Cantaloupe (Jun 18), Celery (Jun 18), Melons (Jun 18), Spaghetti Squash (Jun 20), +4 more. |
| July | Last sowing dates: Eggplant (Jul 3), Corn (Jul 5), Sunflowers (Jul 17), Brussel Sprouts (Jul 22), Pole Beans (Jul 22), Basil (Jul 27), +4 more. |
| August | Last sowing dates: Nasturtiums (Aug 1), Okra (Aug 1), Yellow Squash (Aug 1), Zucchini (Aug 1), Cauliflower (Aug 2), Beans (Aug 3), +12 more. |
| September | Last sowing dates: Bok Choy (Sep 1), Lettuce (Sep 1), Kale (Sep 5), Kohlrabi (Sep 5), Turnip (Sep 10), Arugula (Sep 20), +2 more. |
| October | Direct sow from: Garlic (Oct 23). First frost around October 23. |
| November | Last sowing dates: Garlic (Nov 13). |
| 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 Warrenton, VA (ZIP 20187)?
The median last spring frost date for Warrenton, VA (ZIP code 20187) is around April 22. 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 6; one in ten it runs past May 7.
What is the first fall frost date in Warrenton, VA?
The median first fall frost date for Warrenton, VA is around October 23. 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 7 in the earliest one-in-ten years, so cover tomatoes and peppers from then.
How long is the growing season in Warrenton, VA?
The frost-free growing season in Warrenton is about 184 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 Warrenton (184 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 Warrenton, VA?
Warrenton, VA is in USDA hardiness zone 7a (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 Warrenton, VA?
Start tomatoes indoors Mar 18 and plant out May 6 in Warrenton. The planner uses the local median last frost and this crop's indoor-start and transplant offsets.
How many plantings of lettuce fit in Warrenton?
Two: plant Mar 25 and again by Sep 1; both mature before Oct 30.
When do I plant garlic in Warrenton?
Oct 23 to Nov 13; it overwinters and is ready the following summer.
Can I get two tomato crops in Warrenton?
Yes: plant out May 6 for a summer crop, and set out a second round of transplants by Jun 23 for a fall crop.
Which nearby ZIP has a longer season?
Gainesville (ZIP 20155) has 195 frost-free days, 11 more than Warrenton (ZIP 20187). See Gainesville ZIP 20155 frost dates
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