Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Walden, CO, based on the USDA Hardiness Zone 3b.
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Walden, CO Frost Dates & Growing Season
Last Spring Frost Date for Walden, CO
The average last frost date in spring for Walden is June 15th. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until June 29th 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 Walden, CO
The average first frost date in fall for Walden is August 23rd. 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 Walden, CO
Based on historical frost data, the estimated growing season length in Walden is approximately 69 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.
Walden, CO Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Walden, CO Monthly Planting Recommendations
April
In April, recommended activities include starting Coleus seeds indoors (from April 20th to May 4th).
May
In May, recommended activities include direct sowing Lettuce (from May 18th to June 1st), direct sowing Mustard (from May 18th to June 1st), and direct sowing Watercress (from May 18th to June 1st).
June
In June, recommended activities include direct sowing Okra (from June 29th to July 13th), direct sowing Cucumber (from June 22nd to July 6th), and direct sowing Swiss Chard (from June 1st to June 15th).