Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Indian hills, CO, based on the USDA Hardiness Zone 5b.
On this page:
Indian hills, CO Frost Dates & Growing Season
Last Spring Frost Date for Indian hills, CO
The average last frost date in spring for Indian hills is June 4th. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until June 18th 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 Indian hills, CO
The average first frost date in fall for Indian hills is September 20th. 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 Indian hills, CO
Based on historical frost data, the estimated growing season length in Indian hills is approximately 108 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.
Indian hills, CO Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Indian hills, CO Monthly Planting Recommendations
March
In March, recommended activities include starting Impatiens seeds indoors (from March 26th to April 9th), starting Onion seeds indoors (from March 26th to April 9th), and starting French Lavender seeds indoors (from March 26th to April 9th).
April
In April, recommended activities include starting Cauliflower seeds indoors (from April 9th to April 23rd), starting Marigold seeds indoors (from April 23rd to May 7th), and direct sowing Pea (from April 23rd to May 7th).
May
In May, recommended activities include direct sowing Lettuce (from May 7th to May 21st), direct sowing Radish (from May 7th to May 21st), and direct sowing Swiss Chard (from May 21st to June 4th).
June
In June, recommended activities include direct sowing Zinnia (from June 11th to June 25th), direct sowing Lemon Balm (from June 4th to June 18th), and direct sowing Gladiolus (from June 4th to June 18th).