Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Jerome, IL, based on the USDA Hardiness Zone 6a.
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Jerome, IL Frost Dates & Growing Season
Last Spring Frost Date for Jerome, IL
The average last frost date in spring for Jerome is April 20th. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until May 4th 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 Jerome, IL
The average first frost date in fall for Jerome is October 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 Jerome, IL
Based on historical frost data, the estimated growing season length in Jerome is approximately 183 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.
Jerome, IL Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Jerome, IL Monthly Planting Recommendations
February
In February, recommended activities include starting Petunia seeds indoors (from February 9th to February 23rd), starting Rosemary seeds indoors (from February 9th to February 23rd), and starting Ground Cherry seeds indoors (from February 23rd to March 9th).
March
In March, recommended activities include direct sowing Garden Cress (from March 23rd to April 6th), starting Sage seeds indoors (from March 9th to March 23rd), and direct sowing Sweet Pea (from March 23rd to April 6th).
April
In April, recommended activities include direct sowing Runner Bean (from April 27th to May 11th), direct sowing Cilantro (from April 6th to May 4th), and direct sowing Anise (from April 27th to May 4th).
May
In May, recommended activities include direct sowing Watermelon (from May 4th to May 18th), direct sowing Jute (from May 4th to May 18th), and direct sowing Sesame (from May 4th to May 18th).