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Test Valley Frost Dates & Growing Season
Here's the frost forecast for the next three days (last updated on December 8th, 2025 6:05 AM).
Dec 8th
Safe
Dec 9th
Safe
Dec 10th
Safe
Last Frost Date (Spring)
The average last frost date for Test Valley is April 25th. We recommend waiting until May 9th before planting tender crops outdoors.
First Frost Date (Autumn)
The average first frost date for Test Valley is November 15th.
Growing Season
Based on historical data, the growing season in Test Valley is approximately 204 days long.
Test Valley Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting.
Test Valley Monthly Gardening Guide
February
In February, you can start Geranium indoors, start Lavender indoors, start Onion indoors, start Tomatillo indoors, and start Ground Cherry indoors.
March
In March, you can sow Bok Choy outside, start Swamp Milkweed indoors, sow Garden Cress outside, sow Alfalfa outside, and sow Arugula outside.
April
In April, you can sow Lemon Balm outside, start Pumpkin indoors, sow Milk Thistle outside, sow Cilantro outside, and sow German Chamomile outside.
May
In May, you can sow Chia outside, sow Cantaloupe outside, sow Lima Bean outside, sow Pumpkin outside, and sow Melon outside.