Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Randolph, WI, based on the USDA Hardiness Zone 5a.
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Randolph, WI Frost Dates & Growing Season
Last Spring Frost Date for Randolph, WI
The average last frost date in spring for Randolph is May 9th. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until May 23rd 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 Randolph, WI
The average first frost date in fall for Randolph is October 10th. 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 Randolph, WI
Based on historical frost data, the estimated growing season length in Randolph is approximately 154 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.
Randolph, WI Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Randolph, WI Monthly Planting Recommendations
February
In February, recommended activities include starting Begonia seeds indoors (from February 28th to March 14th), starting Lavender seeds indoors (from February 28th to March 14th), and starting Onion seeds indoors (from February 28th to March 14th).
March
In March, recommended activities include starting Coneflower seeds indoors (from March 14th to March 28th), starting Tomatillo seeds indoors (from March 14th to March 28th), and starting Black Eyed Susan seeds indoors (from March 14th to March 28th).
April
In April, recommended activities include direct sowing Poppy (from April 11th to April 25th), direct sowing Bok Choy (from April 11th to April 25th), and direct sowing Sweet Pea (from April 11th to April 25th).
May
In May, recommended activities include direct sowing Corn (from May 23rd to May 30th), direct sowing Watermelon (from May 23rd to June 6th), and direct sowing Zinnia (from May 16th to May 30th).