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Plymouth Frost Dates & Growing Season
Here's the frost forecast for the next three days (last updated on December 8th, 2025 6:06 AM).
Dec 8th
Safe
Dec 9th
Safe
Dec 10th
Safe
Last Frost Date (Spring)
The average last frost date for Plymouth is April 1st. We recommend waiting until April 15th before planting tender crops outdoors.
First Frost Date (Autumn)
The average first frost date for Plymouth is December 1st.
Growing Season
Based on historical data, the growing season in Plymouth is approximately 244 days long.
Plymouth Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting.
Plymouth Monthly Gardening Guide
January
In January, you can start French Lavender indoors, start Pansy indoors, start Impatiens indoors, start Geranium indoors, and start Celery indoors.
February
In February, you can start Ground Cherry indoors, start Black Eyed Susan indoors, start Marigold indoors, start Rue indoors, and start Basil indoors.
March
In March, you can sow Chervil outside, sow Chives outside, sow Bok Choy outside, sow Mustard outside, and sow Lentil outside.
April
In April, you can sow Cucumber outside, sow Butterfly Pea outside, sow Zucchini outside, sow Watermelon outside, and sow Zinnia outside.