Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Slinger, WI, based on the USDA Hardiness Zone 5b.
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Slinger, WI Frost Dates & Growing Season
Last Spring Frost Date for Slinger, WI
The average last frost date in spring for Slinger is May 7th. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until May 21st 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 Slinger, WI
The average first frost date in fall for Slinger is October 15th. 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 Slinger, WI
Based on historical frost data, the estimated growing season length in Slinger is approximately 161 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.
Slinger, WI Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Slinger, WI Monthly Planting Recommendations
February
In February, recommended activities include starting French Lavender seeds indoors (from February 26th to March 12th), starting Lavender seeds indoors (from February 26th to March 12th), and starting Onion seeds indoors (from February 26th to March 12th).
March
In March, recommended activities include starting Pepper seeds indoors (from March 12th to March 26th), starting Ground Cherry seeds indoors (from March 12th to March 26th), and starting Sage seeds indoors (from March 26th to April 9th).
April
In April, recommended activities include direct sowing Crimson Clover (from April 9th to April 23rd), direct sowing Hyssop (from April 23rd to May 7th), and direct sowing Calendula (from April 23rd to May 7th).
May
In May, recommended activities include direct sowing Zinnia (from May 14th to May 28th), direct sowing Okra (from May 21st to June 4th), and direct sowing Cantaloupe (from May 14th to May 28th).