Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Grand lake, CO, based on the USDA Hardiness Zone 4b.
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Grand lake, CO Frost Dates & Growing Season
Last Spring Frost Date for Grand lake, CO
The average last frost date in spring for Grand lake is June 18th. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until July 2nd 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 Grand lake, CO
The average first frost date in fall for Grand lake is September 1st. 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 Grand lake, CO
Based on historical frost data, the estimated growing season length in Grand lake is approximately 75 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.
Grand lake, CO Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Grand lake, CO Monthly Planting Recommendations
April
In April, recommended activities include starting Tomato seeds indoors (from April 23rd to May 7th), starting Ground Cherry seeds indoors (from April 23rd to May 7th), and starting Petunia seeds indoors (from April 9th to April 23rd).
May
In May, recommended activities include starting Sage seeds indoors (from May 7th to May 21st), direct sowing Watercress (from May 21st to June 4th), and direct sowing Chervil (from May 21st to June 4th).
June
In June, recommended activities include direct sowing Calendula (from June 4th to June 18th), direct sowing German Chamomile (from June 4th to June 18th), and direct sowing Cosmos (from June 25th to July 2nd).
July
In July, recommended activities include direct sowing Okra (from July 2nd to July 16th).