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Blackburn with Darwen Frost Dates & Growing Season
Here's the frost forecast for the next three days (last updated on December 8th, 2025 6:03 AM).
Dec 8th
Safe
Dec 9th
Safe
Dec 10th
Safe
Last Frost Date (Spring)
The average last frost date for Blackburn with Darwen is May 5th. We recommend waiting until May 19th before planting tender crops outdoors.
First Frost Date (Autumn)
The average first frost date for Blackburn with Darwen is November 1st.
Growing Season
Based on historical data, the growing season in Blackburn with Darwen is approximately 180 days long.
Blackburn with Darwen Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting.
Blackburn with Darwen Monthly Gardening Guide
February
In February, you can start French Lavender indoors, start Petunia indoors, start Lavender indoors, start Artichoke indoors, and start Pansy indoors.
March
In March, you can start Cabbage indoors, sow Pea outside, start Moonflower indoors, start Basil indoors, and sow Spinach outside.
April
In April, you can sow Parsley outside, sow California Poppy outside, sow Alyssum outside, sow Fennel outside, and sow Lentil outside.
May
In May, you can sow Runner Bean outside, sow Hollyhock outside, sow Sunflower outside, sow Babys Breath outside, and sow Watermelon outside.