Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Clarendon hills, IL, based on the USDA Hardiness Zone 6a.
On this page:
Clarendon hills, IL Frost Dates & Growing Season
Last Spring Frost Date for Clarendon hills, IL
The average last frost date in spring for Clarendon hills is April 30th. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until May 14th 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 Clarendon hills, IL
The average first frost date in fall for Clarendon hills is October 25th. 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 Clarendon hills, IL
Based on historical frost data, the estimated growing season length in Clarendon hills is approximately 178 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.
Clarendon hills, IL Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Clarendon hills, IL Monthly Planting Recommendations
February
In February, recommended activities include starting Onion seeds indoors (from February 19th to March 5th), starting Pansy seeds indoors (from February 19th to March 5th), and starting Leek seeds indoors (from February 19th to March 5th).
March
In March, recommended activities include starting Luffa seeds indoors (from March 19th to April 2nd), starting Tomatillo seeds indoors (from March 5th to March 19th), and starting Basil seeds indoors (from March 19th to April 2nd).
April
In April, recommended activities include direct sowing Watercress (from April 2nd to April 16th), direct sowing Chives (from April 2nd to April 16th), and direct sowing California Poppy (from April 2nd to April 16th).
May
In May, recommended activities include direct sowing Butternut Squash (from May 7th to May 21st), direct sowing Lima Bean (from May 14th to May 28th), and direct sowing Cantaloupe (from May 7th to May 21st).