Smiths Grove, KY frost dates
Last spring frostApr 9median date
First fall frostOct 30median date
Growing season204 daysfrost-free
Hardiness zone7aZone 7a
How Smiths Grove compares
- In 8 years out of 10, the last spring frost in Smiths Grove falls between March 21 and April 29, a 39-day window. The first fall frost falls between October 17 and November 12.
- The median last frost is 7 days earlier than the Kentucky median of Apr 16.
- Its 204-day growing season is longer than 75% of the 785 Kentucky places with a regular frost season (state median 192 days).
- The last frost is 7 days earlier than the zone 7a median of Apr 16. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 7a chart.
- The weather station records an average of 78 nights a year at or below 32°F.
- Compared with Bowling Green, KY, 23 km away, the last frost here is 4 days later than there and the growing season is 5 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | March 21 |
| 50% (median) | April 9 |
| 10% (safe for tender plants) | April 29 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 17 |
| 50% (median) | October 30 |
| 90% (late) | November 12 |
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 Smiths Grove, KY
Smiths Grove, KY frost dates — last frost Apr 9, first frost Oct 30, zone 7a. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Jan 15 to Jan 29Transplant outside: Mar 12 to Mar 26
Start indoors: Jan 29 to Feb 12Transplant outside: Apr 23 to May 7
Start indoors: Jan 29 to Feb 12Transplant outside: Apr 23 to May 7
Start indoors: Feb 12 to Feb 26Transplant outside: Apr 16 to Apr 30
Start indoors: Feb 12 to Feb 26Transplant outside: Mar 19 to Apr 2Sow outdoors: Mar 12 to Apr 16Plant for fall: Sep 4 to Oct 2
Start indoors: Feb 12 to Feb 26Transplant outside: Mar 12 to Mar 26Sow outdoors: Mar 12 to Mar 26Plant for fall: Aug 21 to Sep 11
Start indoors: Feb 12 to Feb 26Transplant outside: Mar 26 to Apr 9Plant for fall: Jul 24 to Aug 14
Start indoors: Feb 12 to Feb 26Transplant outside: Mar 19 to Apr 2Plant for fall: Jul 24 to Aug 14
Start indoors: Feb 12 to Feb 26Transplant outside: Mar 26 to Apr 9Plant for fall: Jul 24 to Aug 14
Start indoors: Feb 26 to Mar 12Transplant outside: Apr 30 to May 14Sow outdoors: Apr 30 to May 14
Start indoors: Feb 26 to Mar 12Transplant outside: Apr 16 to Apr 30
Sow outdoors: Feb 26 to Mar 19Plant for fall: Aug 7 to Aug 28
Sow outdoors: Feb 26 to Mar 19Plant for fall: Sep 4 to Sep 25
Sow outdoors: Mar 5 to Apr 16Plant for fall: Sep 18 to Oct 9
Start indoors: Mar 12 to Mar 19Transplant outside: Apr 23 to Apr 30Sow outdoors: Apr 16 to Apr 30Plant for fall: Aug 14 to Aug 28
Start indoors: Mar 12 to Mar 19Sow outdoors: Apr 16 to Apr 30Plant for fall: Aug 21 to Sep 4
Start indoors: Mar 12 to Mar 19Sow outdoors: Apr 16 to Apr 30
Start indoors: Mar 12 to Mar 19Transplant outside: Apr 23 to May 7
Sow outdoors: Mar 19 to Apr 16Plant for fall: Aug 7 to Aug 21
Sow outdoors: Mar 19 to Apr 16Plant for fall: Aug 21 to Sep 4
Sow outdoors: Mar 19 to Apr 9
Sow outdoors: Mar 26 to Apr 23Plant for fall: Aug 21 to Sep 4
Sow outdoors: Mar 26 to Apr 16Plant for fall: Sep 4 to Sep 25
Sow outdoors: Apr 16 to May 7Plant for fall: Aug 14 to Aug 28
Sow outdoors: Apr 16 to Apr 30
Transplant outside: Apr 23 to May 14
Plant for fall: Oct 16 to Nov 20
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Smiths Grove, KY
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 15 – Jan 29 | Mar 12 – Mar 26 | — | — |
| Peppers | Jan 29 – Feb 12 | Apr 23 – May 7 | — | — |
| Eggplant | Jan 29 – Feb 12 | Apr 23 – May 7 | — | — |
| Tomatoes | Feb 12 – Feb 26 | Apr 16 – Apr 30 | — | — |
| Lettuce | Feb 12 – Feb 26 | Mar 19 – Apr 2 | Mar 12 – Apr 16 | Sep 4 – Oct 2 |
| Kale | Feb 12 – Feb 26 | Mar 12 – Mar 26 | Mar 12 – Mar 26 | Aug 21 – Sep 11 |
| Broccoli | Feb 12 – Feb 26 | Mar 26 – Apr 9 | — | Jul 24 – Aug 14 |
| Cabbage | Feb 12 – Feb 26 | Mar 19 – Apr 2 | — | Jul 24 – Aug 14 |
| Cauliflower | Feb 12 – Feb 26 | Mar 26 – Apr 9 | — | Jul 24 – Aug 14 |
| Okra | Feb 26 – Mar 12 | Apr 30 – May 14 | Apr 30 – May 14 | — |
| Basil | Feb 26 – Mar 12 | Apr 16 – Apr 30 | — | — |
| Peas | — | — | Feb 26 – Mar 19 | Aug 7 – Aug 28 |
| Spinach | — | — | Feb 26 – Mar 19 | Sep 4 – Sep 25 |
| Radishes | — | — | Mar 5 – Apr 16 | Sep 18 – Oct 9 |
| Cucumbers | Mar 12 – Mar 19 | Apr 23 – Apr 30 | Apr 16 – Apr 30 | Aug 14 – Aug 28 |
| Zucchini & Summer Squash | Mar 12 – Mar 19 | — | Apr 16 – Apr 30 | Aug 21 – Sep 4 |
| Winter Squash & Pumpkins | Mar 12 – Mar 19 | — | Apr 16 – Apr 30 | — |
| Melons & Watermelon | Mar 12 – Mar 19 | Apr 23 – May 7 | — | — |
| Carrots | — | — | Mar 19 – Apr 16 | Aug 7 – Aug 21 |
| Beets | — | — | Mar 19 – Apr 16 | Aug 21 – Sep 4 |
| Potatoes | — | — | Mar 19 – Apr 9 | — |
| Swiss Chard | — | — | Mar 26 – Apr 23 | Aug 21 – Sep 4 |
| Cilantro | — | — | Mar 26 – Apr 16 | Sep 4 – Sep 25 |
| Green Beans | — | — | Apr 16 – May 7 | Aug 14 – Aug 28 |
| Sweet Corn | — | — | Apr 16 – Apr 30 | — |
| Sweet Potatoes | — | Apr 23 – May 14 | — | — |
| Garlic | — | — | — | Oct 16 – Nov 20 |
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 Mammoth Cave, KY weather station, 9 km away (elevation 761 ft (232 m)).
Frost dates near Smiths Grove
- Rocky Hill Apr 9 · Oct 30
- Oakland Apr 12 · Oct 29
- Park City Apr 9 · Oct 30
- Drake Apr 5 · Oct 31
- Brownsville Apr 4 · Oct 31
- Bowling Green Apr 5 · Oct 31
- Cave City Apr 9 · Oct 27
- Sweeden Apr 22 · Oct 22
- Mammoth Cave Apr 4 · Oct 31
- Glasgow Apr 9 · Oct 27
Frequently asked questions
When is the last frost in Smiths Grove, KY?
The median last spring frost in Smiths Grove, KY is April 9. There is still about a 10% chance of frost after April 29, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Smiths Grove, KY?
The median first fall frost is October 30, with about a 10% chance of frost before October 17.
How long is the growing season in Smiths Grove, KY?
About 204 days between the median last spring frost and first fall frost.
What planting zone is Smiths Grove, KY?
Smiths Grove, KY is in USDA hardiness zone 7a.