Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Romeo, CO, based on the USDA Hardiness Zone 5a.
On this page:
Romeo, CO Frost Dates & Growing Season
Last Spring Frost Date for Romeo, CO
The average last frost date in spring for Romeo 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 Romeo, CO
The average first frost date in fall for Romeo 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 Romeo, CO
Based on historical frost data, the estimated growing season length in Romeo 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.
Romeo, CO Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Romeo, CO Monthly Planting Recommendations
April
In April, recommended activities include starting Coleus seeds indoors (from April 15th to April 29th), starting Tomatillo seeds indoors (from April 15th to April 29th), and starting Petunia seeds indoors (from April 1st to April 15th).
May
In May, recommended activities include direct sowing California Poppy (from May 13th to May 27th), starting Cantaloupe seeds indoors (from May 13th to May 27th), and direct sowing Calendula (from May 27th to June 10th).
June
In June, recommended activities include direct sowing Melon (from June 24th to July 8th), direct sowing Gladiolus (from June 10th to June 24th), and direct sowing Watermelon (from June 24th to July 8th).