Heidelberg, MS frost dates
Last spring frostMar 12median date
First fall frostNov 12median date
Growing season245 daysfrost-free
Hardiness zone8bZone 8b
How Heidelberg compares
- In 8 years out of 10, the last spring frost in Heidelberg falls between February 22 and April 1, a 38-day window. The first fall frost falls between October 30 and December 1.
- The median last frost is 5 days earlier than the Mississippi median of Mar 17.
- Its 245-day growing season is longer than 64% of the 435 Mississippi places with a regular frost season (state median 239 days).
- The last frost is 4 days earlier than the zone 8b median of Mar 16. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 8b chart.
- The weather station records an average of 41 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | February 22 |
| 50% (median) | March 12 |
| 10% (safe for tender plants) | April 1 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 30 |
| 50% (median) | November 12 |
| 90% (late) | December 1 |
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 Heidelberg, MS
Heidelberg, MS frost dates — last frost Mar 12, first frost Nov 12, zone 8b. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Dec 18 to Jan 1Start indoors: Dec 18 to Jan 1Transplant outside: Feb 12 to Feb 26
Start indoors: Jan 1 to Jan 15Transplant outside: Mar 26 to Apr 9
Start indoors: Jan 1 to Jan 15Transplant outside: Mar 26 to Apr 9
Start indoors: Jan 15 to Jan 29Transplant outside: Mar 19 to Apr 2
Start indoors: Jan 15 to Jan 29Transplant outside: Feb 19 to Mar 5Sow outdoors: Feb 12 to Mar 19Plant for fall: Sep 17 to Oct 15
Start indoors: Jan 15 to Jan 29Transplant outside: Feb 12 to Feb 26Sow outdoors: Feb 12 to Feb 26Plant for fall: Sep 3 to Sep 24
Start indoors: Jan 15 to Jan 29Transplant outside: Feb 26 to Mar 12Plant for fall: Aug 6 to Aug 27
Start indoors: Jan 15 to Jan 29Transplant outside: Feb 19 to Mar 5Plant for fall: Aug 6 to Aug 27
Start indoors: Jan 15 to Jan 29Transplant outside: Feb 26 to Mar 12Plant for fall: Aug 6 to Aug 27
Start indoors: Jan 29 to Feb 12Transplant outside: Apr 2 to Apr 16Sow outdoors: Apr 2 to Apr 16
Start indoors: Jan 29 to Feb 12Transplant outside: Mar 19 to Apr 2
Sow outdoors: Jan 29 to Feb 19Plant for fall: Aug 20 to Sep 10
Sow outdoors: Jan 29 to Feb 19Plant for fall: Sep 17 to Oct 8
Sow outdoors: Feb 5 to Mar 19Plant for fall: Oct 1 to Oct 22
Start indoors: Feb 12 to Feb 19Transplant outside: Mar 26 to Apr 2Sow outdoors: Mar 19 to Apr 2Plant for fall: Aug 27 to Sep 10
Start indoors: Feb 12 to Feb 19Sow outdoors: Mar 19 to Apr 2Plant for fall: Sep 3 to Sep 17
Start indoors: Feb 12 to Feb 19Sow outdoors: Mar 19 to Apr 2
Start indoors: Feb 12 to Feb 19Transplant outside: Mar 26 to Apr 9
Sow outdoors: Feb 19 to Mar 19Plant for fall: Aug 20 to Sep 3
Sow outdoors: Feb 19 to Mar 19Plant for fall: Sep 3 to Sep 17
Sow outdoors: Feb 19 to Mar 12
Sow outdoors: Feb 26 to Mar 26Plant for fall: Sep 3 to Sep 17
Sow outdoors: Feb 26 to Mar 19Plant for fall: Sep 17 to Oct 8
Sow outdoors: Mar 19 to Apr 9Plant for fall: Aug 27 to Sep 10
Sow outdoors: Mar 19 to Apr 2
Transplant outside: Mar 26 to Apr 16
Plant for fall: Oct 29 to Dec 3
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Heidelberg, MS
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Dec 18 – Jan 1 | Feb 12 – Feb 26 | — | — |
| Peppers | Jan 1 – Jan 15 | Mar 26 – Apr 9 | — | — |
| Eggplant | Jan 1 – Jan 15 | Mar 26 – Apr 9 | — | — |
| Tomatoes | Jan 15 – Jan 29 | Mar 19 – Apr 2 | — | — |
| Lettuce | Jan 15 – Jan 29 | Feb 19 – Mar 5 | Feb 12 – Mar 19 | Sep 17 – Oct 15 |
| Kale | Jan 15 – Jan 29 | Feb 12 – Feb 26 | Feb 12 – Feb 26 | Sep 3 – Sep 24 |
| Broccoli | Jan 15 – Jan 29 | Feb 26 – Mar 12 | — | Aug 6 – Aug 27 |
| Cabbage | Jan 15 – Jan 29 | Feb 19 – Mar 5 | — | Aug 6 – Aug 27 |
| Cauliflower | Jan 15 – Jan 29 | Feb 26 – Mar 12 | — | Aug 6 – Aug 27 |
| Okra | Jan 29 – Feb 12 | Apr 2 – Apr 16 | Apr 2 – Apr 16 | — |
| Basil | Jan 29 – Feb 12 | Mar 19 – Apr 2 | — | — |
| Peas | — | — | Jan 29 – Feb 19 | Aug 20 – Sep 10 |
| Spinach | — | — | Jan 29 – Feb 19 | Sep 17 – Oct 8 |
| Radishes | — | — | Feb 5 – Mar 19 | Oct 1 – Oct 22 |
| Cucumbers | Feb 12 – Feb 19 | Mar 26 – Apr 2 | Mar 19 – Apr 2 | Aug 27 – Sep 10 |
| Zucchini & Summer Squash | Feb 12 – Feb 19 | — | Mar 19 – Apr 2 | Sep 3 – Sep 17 |
| Winter Squash & Pumpkins | Feb 12 – Feb 19 | — | Mar 19 – Apr 2 | — |
| Melons & Watermelon | Feb 12 – Feb 19 | Mar 26 – Apr 9 | — | — |
| Carrots | — | — | Feb 19 – Mar 19 | Aug 20 – Sep 3 |
| Beets | — | — | Feb 19 – Mar 19 | Sep 3 – Sep 17 |
| Potatoes | — | — | Feb 19 – Mar 12 | — |
| Swiss Chard | — | — | Feb 26 – Mar 26 | Sep 3 – Sep 17 |
| Cilantro | — | — | Feb 26 – Mar 19 | Sep 17 – Oct 8 |
| Green Beans | — | — | Mar 19 – Apr 9 | Aug 27 – Sep 10 |
| Sweet Corn | — | — | Mar 19 – Apr 2 | — |
| Sweet Potatoes | — | Mar 26 – Apr 16 | — | — |
| Garlic | — | — | — | Oct 29 – Dec 3 |
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 Laurel, MS weather station, 26 km away (elevation 226 ft (69 m)).
Frost dates near Heidelberg
- Vossburg Mar 14 · Nov 16
- Sandersville Mar 12 · Nov 12
- Paulding Mar 18 · Nov 10
- Moss Mar 12 · Nov 12
- Pachuta Mar 14 · Nov 16
- Laurel Mar 12 · Nov 12
- Bay Springs Mar 12 · Nov 12
- Stringer Mar 12 · Nov 12
- Shubuta Mar 14 · Nov 16
- Rose Hill Mar 24 · Nov 5
Frequently asked questions
When is the last frost in Heidelberg, MS?
The median last spring frost in Heidelberg, MS is March 12. There is still about a 10% chance of frost after April 1, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Heidelberg, MS?
The median first fall frost is November 12, with about a 10% chance of frost before October 30.
How long is the growing season in Heidelberg, MS?
About 245 days between the median last spring frost and first fall frost.
What planting zone is Heidelberg, MS?
Heidelberg, MS is in USDA hardiness zone 8b.