Rombauer, MO frost dates
Last spring frostMar 31median date
First fall frostOct 31median date
Growing season214 daysfrost-free
Hardiness zone7bZone 7b
How Rombauer compares
- In 8 years out of 10, the last spring frost in Rombauer falls between March 15 and April 15, a 31-day window. The first fall frost falls between October 19 and November 13.
- The median last frost is 12 days earlier than the Missouri median of Apr 12.
- Its 214-day growing season is longer than 91% of the 938 Missouri places with a regular frost season (state median 195 days).
- The last frost is 5 days earlier than the zone 7b median of Apr 5. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 7b chart.
- The weather station records an average of 80 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | March 15 |
| 50% (median) | March 31 |
| 10% (safe for tender plants) | April 15 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 19 |
| 50% (median) | October 31 |
| 90% (late) | November 13 |
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 Rombauer, MO
Rombauer, MO frost dates — last frost Mar 31, first frost Oct 31, zone 7b. whenisthelastfrost.com
Crop
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Start indoors: Jan 6 to Jan 20Transplant outside: Mar 3 to Mar 17
Start indoors: Jan 20 to Feb 3Transplant outside: Apr 14 to Apr 28
Start indoors: Jan 20 to Feb 3Transplant outside: Apr 14 to Apr 28
Start indoors: Feb 3 to Feb 17Transplant outside: Apr 7 to Apr 21
Start indoors: Feb 3 to Feb 17Transplant outside: Mar 10 to Mar 24Sow outdoors: Mar 3 to Apr 7Plant for fall: Sep 5 to Oct 3
Start indoors: Feb 3 to Feb 17Transplant outside: Mar 3 to Mar 17Sow outdoors: Mar 3 to Mar 17Plant for fall: Aug 22 to Sep 12
Start indoors: Feb 3 to Feb 17Transplant outside: Mar 17 to Mar 31Plant for fall: Jul 25 to Aug 15
Start indoors: Feb 3 to Feb 17Transplant outside: Mar 10 to Mar 24Plant for fall: Jul 25 to Aug 15
Start indoors: Feb 3 to Feb 17Transplant outside: Mar 17 to Mar 31Plant for fall: Jul 25 to Aug 15
Start indoors: Feb 17 to Mar 3Transplant outside: Apr 21 to May 5Sow outdoors: Apr 21 to May 5
Start indoors: Feb 17 to Mar 3Transplant outside: Apr 7 to Apr 21
Sow outdoors: Feb 17 to Mar 10Plant for fall: Aug 8 to Aug 29
Sow outdoors: Feb 17 to Mar 10Plant for fall: Sep 5 to Sep 26
Sow outdoors: Feb 24 to Apr 7Plant for fall: Sep 19 to Oct 10
Start indoors: Mar 3 to Mar 10Transplant outside: Apr 14 to Apr 21Sow outdoors: Apr 7 to Apr 21Plant for fall: Aug 15 to Aug 29
Start indoors: Mar 3 to Mar 10Sow outdoors: Apr 7 to Apr 21Plant for fall: Aug 22 to Sep 5
Start indoors: Mar 3 to Mar 10Sow outdoors: Apr 7 to Apr 21
Start indoors: Mar 3 to Mar 10Transplant outside: Apr 14 to Apr 28
Sow outdoors: Mar 10 to Apr 7Plant for fall: Aug 8 to Aug 22
Sow outdoors: Mar 10 to Apr 7Plant for fall: Aug 22 to Sep 5
Sow outdoors: Mar 10 to Mar 31
Sow outdoors: Mar 17 to Apr 14Plant for fall: Aug 22 to Sep 5
Sow outdoors: Mar 17 to Apr 7Plant for fall: Sep 5 to Sep 26
Sow outdoors: Apr 7 to Apr 28Plant for fall: Aug 15 to Aug 29
Sow outdoors: Apr 7 to Apr 21
Transplant outside: Apr 14 to May 5
Plant for fall: Oct 17 to Nov 21
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Rombauer, MO
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 6 – Jan 20 | Mar 3 – Mar 17 | — | — |
| Peppers | Jan 20 – Feb 3 | Apr 14 – Apr 28 | — | — |
| Eggplant | Jan 20 – Feb 3 | Apr 14 – Apr 28 | — | — |
| Tomatoes | Feb 3 – Feb 17 | Apr 7 – Apr 21 | — | — |
| Lettuce | Feb 3 – Feb 17 | Mar 10 – Mar 24 | Mar 3 – Apr 7 | Sep 5 – Oct 3 |
| Kale | Feb 3 – Feb 17 | Mar 3 – Mar 17 | Mar 3 – Mar 17 | Aug 22 – Sep 12 |
| Broccoli | Feb 3 – Feb 17 | Mar 17 – Mar 31 | — | Jul 25 – Aug 15 |
| Cabbage | Feb 3 – Feb 17 | Mar 10 – Mar 24 | — | Jul 25 – Aug 15 |
| Cauliflower | Feb 3 – Feb 17 | Mar 17 – Mar 31 | — | Jul 25 – Aug 15 |
| Okra | Feb 17 – Mar 3 | Apr 21 – May 5 | Apr 21 – May 5 | — |
| Basil | Feb 17 – Mar 3 | Apr 7 – Apr 21 | — | — |
| Peas | — | — | Feb 17 – Mar 10 | Aug 8 – Aug 29 |
| Spinach | — | — | Feb 17 – Mar 10 | Sep 5 – Sep 26 |
| Radishes | — | — | Feb 24 – Apr 7 | Sep 19 – Oct 10 |
| Cucumbers | Mar 3 – Mar 10 | Apr 14 – Apr 21 | Apr 7 – Apr 21 | Aug 15 – Aug 29 |
| Zucchini & Summer Squash | Mar 3 – Mar 10 | — | Apr 7 – Apr 21 | Aug 22 – Sep 5 |
| Winter Squash & Pumpkins | Mar 3 – Mar 10 | — | Apr 7 – Apr 21 | — |
| Melons & Watermelon | Mar 3 – Mar 10 | Apr 14 – Apr 28 | — | — |
| Carrots | — | — | Mar 10 – Apr 7 | Aug 8 – Aug 22 |
| Beets | — | — | Mar 10 – Apr 7 | Aug 22 – Sep 5 |
| Potatoes | — | — | Mar 10 – Mar 31 | — |
| Swiss Chard | — | — | Mar 17 – Apr 14 | Aug 22 – Sep 5 |
| Cilantro | — | — | Mar 17 – Apr 7 | Sep 5 – Sep 26 |
| Green Beans | — | — | Apr 7 – Apr 28 | Aug 15 – Aug 29 |
| Sweet Corn | — | — | Apr 7 – Apr 21 | — |
| Sweet Potatoes | — | Apr 14 – May 5 | — | — |
| Garlic | — | — | — | Oct 17 – Nov 21 |
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 Poplar Bluff Muni Ap, MO weather station, 9 km away (elevation 328 ft (100 m)).
Frost dates near Rombauer
- Fisk Mar 31 · Oct 31
- Wappapello Apr 2 · Nov 2
- Dudley Mar 31 · Oct 31
- Puxico Apr 2 · Nov 2
- Poplar Bluff Mar 29 · Nov 5
- Broseley Mar 31 · Oct 31
- Williamsville Apr 2 · Nov 2
- Dexter Mar 29 · Nov 3
- Qulin Mar 31 · Oct 31
- Bloomfield Apr 7 · Oct 27
Frequently asked questions
When is the last frost in Rombauer, MO?
The median last spring frost in Rombauer, MO is March 31. 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 Rombauer, MO?
The median first fall frost is October 31, with about a 10% chance of frost before October 19.
How long is the growing season in Rombauer, MO?
About 214 days between the median last spring frost and first fall frost.
What planting zone is Rombauer, MO?
Rombauer, MO is in USDA hardiness zone 7b.