Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Port huron, MI, based on the USDA Hardiness Zone 6b.
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Port huron, MI Frost Dates & Growing Season
Last Spring Frost Date for Port huron, MI
The average last frost date in spring for Port huron 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 Port huron, MI
The average first frost date in fall for Port huron is October 25th. 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 Port huron, MI
Based on historical frost data, the estimated growing season length in Port huron is approximately 169 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.
Port huron, MI Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Port huron, MI Monthly Planting Recommendations
February
In February, recommended activities include starting Pansy seeds indoors (from February 28th to March 14th), starting Snapdragon seeds indoors (from February 28th to March 14th), and starting Celery seeds indoors (from February 28th to March 14th).
March
In March, recommended activities include starting Black Eyed Susan seeds indoors (from March 14th to March 28th), starting Statice seeds indoors (from March 14th to March 28th), and starting Brussel Sprout seeds indoors (from March 28th to April 11th).
April
In April, recommended activities include direct sowing Swiss Chard (from April 25th to May 9th), direct sowing Watercress (from April 11th to April 25th), and direct sowing Poppy (from April 11th to April 25th).
May
In May, recommended activities include direct sowing Lemon Balm (from May 9th to May 23rd), direct sowing Moss Rose (from May 16th to May 30th), and direct sowing Cantaloupe (from May 16th to May 30th).