Frost dates for 22320 — Alexandria, VA
Last spring frostApr 3median date
First fall frostNov 8median date
Growing season219 daysfrost-free
Hardiness zone8aZone 8a
How Alexandria compares
- In 8 years out of 10, the last spring frost in Alexandria falls between March 19 and April 15, a 27-day window. The first fall frost falls between October 24 and November 23.
- The median last frost is 10 days earlier than the Virginia median of Apr 13.
- Its 219-day growing season is longer than 83% of the 837 Virginia places with a regular frost season (state median 198 days).
- The last frost is 5 days later than the zone 8a median of Mar 29. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 8a chart.
- The weather station records an average of 80 nights a year at or below 32°F.
- Compared with Arlington, VA, 9 km away, the last frost here is 10 days later than there and the growing season is 20 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | March 19 |
| 50% (median) | April 3 |
| 10% (safe for tender plants) | April 15 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 24 |
| 50% (median) | November 8 |
| 90% (late) | November 23 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Planting calendar for Alexandria, VA
Frost dates for 22320 — Alexandria, VA — last frost Apr 3, first frost Nov 8, zone 8a. whenisthelastfrost.com
Crop
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Start indoors: Jan 9 to Jan 23Transplant outside: Mar 6 to Mar 20
Start indoors: Jan 23 to Feb 6Transplant outside: Apr 17 to May 1
Start indoors: Jan 23 to Feb 6Transplant outside: Apr 17 to May 1
Start indoors: Feb 6 to Feb 20Transplant outside: Apr 10 to Apr 24
Start indoors: Feb 6 to Feb 20Transplant outside: Mar 13 to Mar 27Sow outdoors: Mar 6 to Apr 10Plant for fall: Sep 13 to Oct 11
Start indoors: Feb 6 to Feb 20Transplant outside: Mar 6 to Mar 20Sow outdoors: Mar 6 to Mar 20Plant for fall: Aug 30 to Sep 20
Start indoors: Feb 6 to Feb 20Transplant outside: Mar 20 to Apr 3Plant for fall: Aug 2 to Aug 23
Start indoors: Feb 6 to Feb 20Transplant outside: Mar 13 to Mar 27Plant for fall: Aug 2 to Aug 23
Start indoors: Feb 6 to Feb 20Transplant outside: Mar 20 to Apr 3Plant for fall: Aug 2 to Aug 23
Start indoors: Feb 20 to Mar 6Transplant outside: Apr 24 to May 8Sow outdoors: Apr 24 to May 8
Start indoors: Feb 20 to Mar 6Transplant outside: Apr 10 to Apr 24
Sow outdoors: Feb 20 to Mar 13Plant for fall: Aug 16 to Sep 6
Sow outdoors: Feb 20 to Mar 13Plant for fall: Sep 13 to Oct 4
Sow outdoors: Feb 27 to Apr 10Plant for fall: Sep 27 to Oct 18
Start indoors: Mar 6 to Mar 13Transplant outside: Apr 17 to Apr 24Sow outdoors: Apr 10 to Apr 24Plant for fall: Aug 23 to Sep 6
Start indoors: Mar 6 to Mar 13Sow outdoors: Apr 10 to Apr 24Plant for fall: Aug 30 to Sep 13
Start indoors: Mar 6 to Mar 13Sow outdoors: Apr 10 to Apr 24
Start indoors: Mar 6 to Mar 13Transplant outside: Apr 17 to May 1
Sow outdoors: Mar 13 to Apr 10Plant for fall: Aug 16 to Aug 30
Sow outdoors: Mar 13 to Apr 10Plant for fall: Aug 30 to Sep 13
Sow outdoors: Mar 13 to Apr 3
Sow outdoors: Mar 20 to Apr 17Plant for fall: Aug 30 to Sep 13
Sow outdoors: Mar 20 to Apr 10Plant for fall: Sep 13 to Oct 4
Sow outdoors: Apr 10 to May 1Plant for fall: Aug 23 to Sep 6
Sow outdoors: Apr 10 to Apr 24
Transplant outside: Apr 17 to May 8
Plant for fall: Oct 25 to Nov 29
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Alexandria, VA
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 9 – Jan 23 | Mar 6 – Mar 20 | — | — |
| Peppers | Jan 23 – Feb 6 | Apr 17 – May 1 | — | — |
| Eggplant | Jan 23 – Feb 6 | Apr 17 – May 1 | — | — |
| Tomatoes | Feb 6 – Feb 20 | Apr 10 – Apr 24 | — | — |
| Lettuce | Feb 6 – Feb 20 | Mar 13 – Mar 27 | Mar 6 – Apr 10 | Sep 13 – Oct 11 |
| Kale | Feb 6 – Feb 20 | Mar 6 – Mar 20 | Mar 6 – Mar 20 | Aug 30 – Sep 20 |
| Broccoli | Feb 6 – Feb 20 | Mar 20 – Apr 3 | — | Aug 2 – Aug 23 |
| Cabbage | Feb 6 – Feb 20 | Mar 13 – Mar 27 | — | Aug 2 – Aug 23 |
| Cauliflower | Feb 6 – Feb 20 | Mar 20 – Apr 3 | — | Aug 2 – Aug 23 |
| Okra | Feb 20 – Mar 6 | Apr 24 – May 8 | Apr 24 – May 8 | — |
| Basil | Feb 20 – Mar 6 | Apr 10 – Apr 24 | — | — |
| Peas | — | — | Feb 20 – Mar 13 | Aug 16 – Sep 6 |
| Spinach | — | — | Feb 20 – Mar 13 | Sep 13 – Oct 4 |
| Radishes | — | — | Feb 27 – Apr 10 | Sep 27 – Oct 18 |
| Cucumbers | Mar 6 – Mar 13 | Apr 17 – Apr 24 | Apr 10 – Apr 24 | Aug 23 – Sep 6 |
| Zucchini & Summer Squash | Mar 6 – Mar 13 | — | Apr 10 – Apr 24 | Aug 30 – Sep 13 |
| Winter Squash & Pumpkins | Mar 6 – Mar 13 | — | Apr 10 – Apr 24 | — |
| Melons & Watermelon | Mar 6 – Mar 13 | Apr 17 – May 1 | — | — |
| Carrots | — | — | Mar 13 – Apr 10 | Aug 16 – Aug 30 |
| Beets | — | — | Mar 13 – Apr 10 | Aug 30 – Sep 13 |
| Potatoes | — | — | Mar 13 – Apr 3 | — |
| Swiss Chard | — | — | Mar 20 – Apr 17 | Aug 30 – Sep 13 |
| Cilantro | — | — | Mar 20 – Apr 10 | Sep 13 – Oct 4 |
| Green Beans | — | — | Apr 10 – May 1 | Aug 23 – Sep 6 |
| Sweet Corn | — | — | Apr 10 – Apr 24 | — |
| Sweet Potatoes | — | Apr 17 – May 8 | — | — |
| Garlic | — | — | — | Oct 25 – Nov 29 |
Dates come from the median frost dates and common extension-service timing. Adjust for your soil temperature, microclimate and the varieties you grow.
About these dates
Based on 1991–2020 NOAA climate normals for the Oxon Hill, MD weather station, 5 km away (elevation 190 ft (58 m)).
ZIP codes in Alexandria: 22301 22302 22303 22304 22305 22306 22307 22308 22309 22310 22311 22312 22313 22314 22315 22320 22331 22332 22333 22334 22350
Frost dates near Alexandria
- Arlington Mar 24 · Nov 18
- Fort Myer Apr 9 · Oct 31
- Mount Vernon Apr 3 · Nov 8
- Falls Church Apr 9 · Oct 31
- Newington Apr 3 · Nov 8
- Fort Belvoir Apr 3 · Nov 8
- Annandale Apr 14 · Oct 29
- Springfield Apr 14 · Oct 29
Frequently asked questions
When is the last frost in Alexandria, VA?
The median last spring frost in Alexandria, VA is April 3. There is still about a 10% chance of frost after April 15, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Alexandria, VA?
The median first fall frost is November 8, with about a 10% chance of frost before October 24.
How long is the growing season in Alexandria, VA?
About 219 days between the median last spring frost and first fall frost.
What planting zone is Alexandria, VA?
Alexandria, VA is in USDA hardiness zone 8a.