Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Keenesburg, CO, based on the USDA Hardiness Zone 5b.
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Keenesburg, CO Frost Dates & Growing Season
Last Spring Frost Date for Keenesburg, CO
The average last frost date in spring for Keenesburg is May 9th. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until May 23rd 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 Keenesburg, CO
The average first frost date in fall for Keenesburg is October 4th. 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 Keenesburg, CO
Based on historical frost data, the estimated growing season length in Keenesburg is approximately 148 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.
Keenesburg, CO Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Keenesburg, CO Monthly Planting Recommendations
February
In February, recommended activities include starting Leek seeds indoors (from February 28th to March 14th), starting Impatiens seeds indoors (from February 28th to March 14th), and starting Celery seeds indoors (from February 28th to March 14th).
March
In March, recommended activities include starting Broccoli seeds indoors (from March 14th to March 28th), starting Tomato seeds indoors (from March 14th to March 28th), and starting Coleus seeds indoors (from March 14th to March 28th).
April
In April, recommended activities include direct sowing Chervil (from April 11th to April 25th), direct sowing Radish (from April 11th to April 25th), and direct sowing Lettuce (from April 11th to April 25th).
May
In May, recommended activities include direct sowing Anise (from May 16th to May 23rd), direct sowing Butternut Squash (from May 16th to May 30th), and direct sowing Cantaloupe (from May 16th to May 30th).