Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Cheyenne, WY, based on the USDA Hardiness Zone 5b.
On this page:
Cheyenne, WY Frost Dates & Growing Season
Last Spring Frost Date for Cheyenne, WY
The average last frost date in spring for Cheyenne is May 19th. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until June 2nd before moving plants outdoors. Waiting these extra few weeks significantly reduces the risk of a late freeze damaging young transplants.
First Fall Frost Date for Cheyenne, WY
The average first frost date in fall for Cheyenne is September 25th. This date marks the approximate end of the growing season for tender plants. Gardeners should plan to harvest frost-sensitive vegetables or provide heavy protection (such as row covers) before this date to avoid crop loss.
Growing Season Length in Cheyenne, WY
Based on historical frost data, the estimated growing season length in Cheyenne is approximately 129 days. This duration determines which vegetable varieties have enough time to reach maturity before the winter cold sets in. Short-season varieties are recommended for crops that require a longer warm period.
Please note: These dates are climatological averages. Actual weather conditions vary by year. Always check the local 10-day forecast before planting.
Cheyenne, WY Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Cheyenne, WY Monthly Planting Recommendations
March
In March, recommended activities include starting Lavender seeds indoors (from March 10th to March 24th), starting Tomatillo seeds indoors (from March 24th to April 7th), and starting Cabbage seeds indoors (from March 24th to April 7th).
April
In April, recommended activities include direct sowing Crimson Clover (from April 21st to May 5th), direct sowing Spinach (from April 7th to April 21st), and starting Brussel Sprout seeds indoors (from April 7th to April 21st).
May
In May, recommended activities include direct sowing Morning Glory (from May 26th to June 9th), direct sowing Cilantro (from May 5th to June 2nd), and direct sowing Alyssum (from May 5th to May 19th).
June
In June, recommended activities include direct sowing Mung Bean (from June 2nd to June 16th), direct sowing Sesame (from June 2nd to June 16th), and direct sowing Corn (from June 2nd to June 9th).