Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Boulder flats, WY, based on the USDA Hardiness Zone 5a.
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Boulder flats, WY Frost Dates & Growing Season
Last Spring Frost Date for Boulder flats, WY
The average last frost date in spring for Boulder flats is May 23rd. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until June 6th 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 Boulder flats, WY
The average first frost date in fall for Boulder flats is September 15th. 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 Boulder flats, WY
Based on historical frost data, the estimated growing season length in Boulder flats is approximately 115 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.
Boulder flats, WY Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Boulder flats, WY Monthly Planting Recommendations
March
In March, recommended activities include starting Pepper seeds indoors (from March 28th to April 11th), starting Black Eyed Susan seeds indoors (from March 28th to April 11th), and starting Tomato seeds indoors (from March 28th to April 11th).
April
In April, recommended activities include direct sowing Sorrel (from April 25th to May 9th), direct sowing Poppy (from April 25th to May 9th), and starting Moonflower seeds indoors (from April 11th to April 25th).
May
In May, recommended activities include direct sowing Dill (from May 9th to May 23rd), direct sowing Cilantro (from May 9th to June 6th), and direct sowing Nasturtium (from May 30th to June 6th).
June
In June, recommended activities include direct sowing Mung Bean (from June 6th to June 20th), direct sowing Sesame (from June 6th to June 20th), and direct sowing Black Bean (from June 6th to June 20th).