Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Winston, MT, based on the USDA Hardiness Zone 4b.
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Winston, MT Frost Dates & Growing Season
Last Spring Frost Date for Winston, MT
The average last frost date in spring for Winston is May 25th. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until June 8th 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 Winston, MT
The average first frost date in fall for Winston is September 20th. 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 Winston, MT
Based on historical frost data, the estimated growing season length in Winston is approximately 118 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.
Winston, MT Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Winston, MT Monthly Planting Recommendations
March
In March, recommended activities include starting Coleus seeds indoors (from March 30th to April 13th), starting Geranium seeds indoors (from March 16th to March 30th), and starting Oregano seeds indoors (from March 30th to April 13th).
April
In April, recommended activities include direct sowing Watercress (from April 27th to May 11th), starting Cantaloupe seeds indoors (from April 27th to May 11th), and direct sowing Sorrel (from April 27th to May 11th).
May
In May, recommended activities include direct sowing German Chamomile (from May 11th to May 25th), direct sowing Lentil (from May 11th to May 25th), and direct sowing Carrot (from May 4th to May 18th).
June
In June, recommended activities include direct sowing Moss Rose (from June 1st to June 15th), direct sowing Mung Bean (from June 8th to June 22nd), and direct sowing Zinnia (from June 1st to June 15th).