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Johnson County

Gardening Calendar

Great gardens don't just happen. They take careful planning. This garden calendar should help with your planning process.

Average Frost Free Dates for Johnson County, Kansas

Spring

Percentage Chance of Frost
(32 degrees F)

Dates
50/50 ChanceApril 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 ChanceOctober 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.

K-State Research and Extension Johnson County Master Gardener logo

Have questions? The Hotline is staffed by trained EMG volunteers and Extension staff who will assist you with questions.
 
Phone: (913) 715-7050
 
Email:garden.help@jocogov.org
 
Diagnosing Plant Problems

The Horticulture staff and EMGs are available to assist you in identifying your lawn and garden problems. Click on the following link to learn more.