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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 Stevia indoors, start Broccoli indoors, start Pepper indoors, start Cabbage indoors, and start Cauliflower indoors.
March
In March, you can sow Radish outside, sow Milkweed outside, sow Mustard outside, sow Potato outside, and sow California Poppy outside.
April
In April, you can sow Babys Breath outside, sow Swiss Chard outside, sow Milk Thistle outside, sow German Chamomile outside, and sow Lentil outside.
May
In May, you can sow Butternut Squash outside, sow Hollyhock outside, sow Sesame outside, sow Mung Bean outside, and sow Runner Bean outside.