Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Omro, WI, based on the USDA Hardiness Zone 5a.
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Omro, WI Frost Dates & Growing Season
Last Spring Frost Date for Omro, WI
The average last frost date in spring for Omro is May 6th. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until May 20th 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 Omro, WI
The average first frost date in fall for Omro 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 Omro, WI
Based on historical frost data, the estimated growing season length in Omro is approximately 157 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.
Omro, WI Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Omro, WI Monthly Planting Recommendations
February
In February, recommended activities include starting Lavender seeds indoors (from February 25th to March 11th), starting French Lavender seeds indoors (from February 25th to March 11th), and starting Pansy seeds indoors (from February 25th to March 11th).
March
In March, recommended activities include starting Black Eyed Susan seeds indoors (from March 11th to March 25th), starting Pepper seeds indoors (from March 11th to March 25th), and starting Broccoli seeds indoors (from March 11th to March 25th).
April
In April, recommended activities include direct sowing Milk Thistle (from April 22nd to May 6th), direct sowing Hyssop (from April 22nd to May 6th), and direct sowing Alyssum (from April 22nd to May 6th).
May
In May, recommended activities include direct sowing Gladiolus (from May 6th to May 20th), direct sowing Runner Bean (from May 13th to May 27th), and direct sowing Cucumber (from May 13th to May 27th).