Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Spring green, WI, based on the USDA Hardiness Zone 5a.
On this page:
Spring green, WI Frost Dates & Growing Season
Last Spring Frost Date for Spring green, WI
The average last frost date in spring for Spring green 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 Spring green, WI
The average first frost date in fall for Spring green is October 5th. 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 Spring green, WI
Based on historical frost data, the estimated growing season length in Spring green is approximately 149 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.
Spring green, WI Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Spring green, WI Monthly Planting Recommendations
February
In February, recommended activities include starting Petunia seeds indoors (from February 28th to March 14th), starting Celery seeds indoors (from February 28th to March 14th), and starting Geranium 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 Basil seeds indoors (from March 28th to April 11th), and starting Coleus seeds indoors (from March 14th to March 28th).
April
In April, recommended activities include direct sowing Dill (from April 25th to May 9th), direct sowing Swiss Chard (from April 25th to May 9th), and direct sowing Beet (from April 25th to May 9th).
May
In May, recommended activities include direct sowing Cucumber (from May 16th to May 30th), direct sowing Okra (from May 23rd to June 6th), and direct sowing Sunflower (from May 16th to May 30th).