Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Glenwood springs, CO, based on the USDA Hardiness Zone 5b.
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Glenwood springs, CO Frost Dates & Growing Season
Last Spring Frost Date for Glenwood springs, CO
The average last frost date in spring for Glenwood springs is May 18th. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until June 1st 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 Glenwood springs, CO
The average first frost date in fall for Glenwood springs is October 5th. 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 Glenwood springs, CO
Based on historical frost data, the estimated growing season length in Glenwood springs is approximately 140 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.
Glenwood springs, CO Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Glenwood springs, CO Monthly Planting Recommendations
March
In March, recommended activities include starting Lavender seeds indoors (from March 9th to March 23rd), starting Aubergine seeds indoors (from March 23rd to April 6th), and starting Pansy seeds indoors (from March 9th to March 23rd).
April
In April, recommended activities include direct sowing Bok Choy (from April 20th to May 4th), direct sowing California Poppy (from April 20th to May 4th), and direct sowing Poppy (from April 20th to May 4th).
May
In May, recommended activities include direct sowing Milk Thistle (from May 4th to May 18th), direct sowing Pumpkin (from May 25th to June 8th), and direct sowing Alyssum (from May 4th to May 18th).
June
In June, recommended activities include direct sowing Chia (from June 1st to June 15th), direct sowing Lima Bean (from June 1st to June 15th), and direct sowing Butterfly Pea (from June 1st to June 15th).