Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Renwick, IA, based on the USDA Hardiness Zone 5a.
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Renwick, IA Frost Dates & Growing Season
Last Spring Frost Date for Renwick, IA
The average last frost date in spring for Renwick is May 5th. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until May 19th 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 Renwick, IA
The average first frost date in fall for Renwick 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 Renwick, IA
Based on historical frost data, the estimated growing season length in Renwick is approximately 153 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.
Renwick, IA Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Renwick, IA Monthly Planting Recommendations
February
In February, recommended activities include starting Geranium seeds indoors (from February 24th to March 10th), starting Impatiens seeds indoors (from February 24th to March 10th), and starting Snapdragon seeds indoors (from February 24th to March 10th).
March
In March, recommended activities include starting Thyme seeds indoors (from March 10th to March 24th), starting Brussel Sprout seeds indoors (from March 24th to April 7th), and starting Coleus seeds indoors (from March 10th to March 24th).
April
In April, recommended activities include direct sowing Calendula (from April 21st to May 5th), direct sowing Dill (from April 21st to May 5th), and direct sowing Alyssum (from April 21st to May 5th).
May
In May, recommended activities include direct sowing Sunflower (from May 12th to May 26th), direct sowing Butterfly Pea (from May 19th to June 2nd), and direct sowing Anise (from May 12th to May 19th).