Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Johnsonville, IL, based on the USDA Hardiness Zone 6b.
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Johnsonville, IL Frost Dates & Growing Season
Last Spring Frost Date for Johnsonville, IL
The average last frost date in spring for Johnsonville is April 18th. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until May 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 Johnsonville, IL
The average first frost date in fall for Johnsonville 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 Johnsonville, IL
Based on historical frost data, the estimated growing season length in Johnsonville is approximately 185 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.
Johnsonville, IL Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Johnsonville, IL Monthly Planting Recommendations
February
In February, recommended activities include starting Black Eyed Susan seeds indoors (from February 21st to March 7th), starting Lavender seeds indoors (from February 7th to February 21st), and starting Geranium seeds indoors (from February 7th to February 21st).
March
In March, recommended activities include direct sowing Garden Cress (from March 21st to April 4th), direct sowing Pea (from March 7th to March 21st), and direct sowing Chives (from March 21st to April 4th).
April
In April, recommended activities include direct sowing Cucumber (from April 25th to May 9th), direct sowing Anise (from April 25th to May 2nd), and direct sowing Milk Thistle (from April 4th to April 18th).
May
In May, recommended activities include direct sowing Corn (from May 2nd to May 9th), direct sowing Jute (from May 2nd to May 16th), and direct sowing Black Bean (from May 2nd to May 16th).