Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Three forks, MT, based on the USDA Hardiness Zone 4b.
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Three forks, MT Frost Dates & Growing Season
Last Spring Frost Date for Three forks, MT
The average last frost date in spring for Three forks is June 10th. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until June 24th 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 Three forks, MT
The average first frost date in fall for Three forks is September 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 Three forks, MT
Based on historical frost data, the estimated growing season length in Three forks is approximately 97 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.
Three forks, MT Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Three forks, MT Monthly Planting Recommendations
April
In April, recommended activities include starting Ground Cherry seeds indoors (from April 15th to April 29th), starting Oregano seeds indoors (from April 15th to April 29th), and direct sowing Spinach (from April 29th to May 13th).
May
In May, recommended activities include direct sowing Alyssum (from May 27th to June 10th), direct sowing Chervil (from May 13th to May 27th), and direct sowing Hyssop (from May 27th to June 10th).
June
In June, recommended activities include direct sowing Cantaloupe (from June 17th to July 1st), direct sowing Melon (from June 24th to July 8th), and direct sowing Zucchini (from June 17th to July 1st).