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Derby Frost Dates & Growing Season
Here's the frost forecast for the next three days (last updated on December 8th, 2025 6:00 AM).
Dec 8th
Safe
Dec 9th
Safe
Dec 10th
Safe
Last Frost Date (Spring)
The average last frost date for Derby is April 25th. We recommend waiting until May 9th before planting tender crops outdoors.
First Frost Date (Autumn)
The average first frost date for Derby is November 15th.
Growing Season
Based on historical data, the growing season in Derby is approximately 204 days long.
Derby Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting.
Derby Monthly Gardening Guide
February
In February, you can start Begonia indoors, start Rue indoors, start Rosemary indoors, start Snapdragon indoors, and start Leek indoors.
March
In March, you can sow Chervil outside, sow Crimson Clover outside, sow Sweet Pea outside, sow Poppy outside, and start Swamp Milkweed indoors.
April
In April, you can sow Fennel outside, sow Calendula outside, sow Lentil outside, sow Lemon Balm outside, and sow Milk Thistle outside.
May
In May, you can sow Zinnia outside, sow Morning Glory outside, sow Black Bean outside, sow Runner Bean outside, and sow Anise outside.