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Harborough 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 Harborough is April 25th. We recommend waiting until May 9th before planting tender crops outdoors.
First Frost Date (Autumn)
The average first frost date for Harborough is November 15th.
Growing Season
Based on historical data, the growing season in Harborough is approximately 204 days long.
Harborough Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting.
Harborough Monthly Gardening Guide
February
In February, you can start Pansy indoors, start Rosemary indoors, start Tomatillo indoors, start Thyme indoors, and start Black Eyed Susan indoors.
March
In March, you can sow Flax outside, start Luffa indoors, start Brussel Sprout indoors, sow Radish outside, and start Cantaloupe indoors.
April
In April, you can sow German Chamomile outside, sow Lemon Balm outside, sow Forget Me Not outside, sow Dill outside, and sow Babys Breath outside.
May
In May, you can sow Anise outside, sow Sunflower outside, sow Cosmos outside, sow Okra outside, and sow Butternut Squash outside.