Gardening Calendar
Great gardens don't just happen. They take careful planning. This garden calendar should help with your planning process.
How Do I Check My Ground Temperature?
This is where most accurate ground temperature reading in Kansas can be found.
What is the mesonet .
Average Frost Free Dates for Johnson County, Kansas
SpringPercentage Chance of Frost |
Dates |
| 50/50 Chance | April 15 (Average last frost date) |
| 40% | April 18 |
| 30% | April 21 |
| 20% | April 25 |
| 10% | April 30 |
| 5% | May 4 |
| 1% | May 13 |
- Earliest date of last frost was March 15, 1910.
- Latest date of last frost was May 14, 1914.
Fall
| Percentage Chance of Frost (32 degrees F) |
Dates |
| 50/50 Chance | October 23 (Average first frost date) |
| 40% | October 20 |
| 30% | October 17 |
| 20% | October 13 |
| 10% | October 9 |
| 5% | October 5 |
| 1% | September 29 |
- Earliest date of first frost was September 24, 1942.
- Latest date of first frost was November 11, 1946.