Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Sanford, CO, based on the USDA Hardiness Zone 5a.
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Sanford, CO Frost Dates & Growing Season
Last Spring Frost Date for Sanford, CO
The average last frost date in spring for Sanford is June 10th. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until June 24th 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 Sanford, CO
The average first frost date in fall for Sanford 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 Sanford, CO
Based on historical frost data, the estimated growing season length in Sanford is approximately 97 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.
Sanford, CO Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Sanford, CO Monthly Planting Recommendations
April
In April, recommended activities include starting Tomato seeds indoors (from April 15th to April 29th), direct sowing Pea (from April 29th to May 13th), and starting Snapdragon seeds indoors (from April 1st to April 15th).
May
In May, recommended activities include direct sowing Lettuce (from May 13th to May 27th), direct sowing Calendula (from May 27th to June 10th), and direct sowing Poppy (from May 13th to May 27th).
June
In June, recommended activities include direct sowing Nasturtium (from June 17th to June 24th), direct sowing Babys Breath (from June 10th to June 24th), and direct sowing Corn (from June 24th to July 1st).