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Bromley Frost Dates & Growing Season
Here's the frost forecast for the next three days (last updated on December 8th, 2025 6:02 AM).
Dec 8th
Safe
Dec 9th
Safe
Dec 10th
Safe
Last Frost Date (Spring)
The average last frost date for Bromley is April 20th. We recommend waiting until May 4th before planting tender crops outdoors.
First Frost Date (Autumn)
The average first frost date for Bromley is November 20th.
Growing Season
Based on historical data, the growing season in Bromley is approximately 214 days long.
Bromley Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting.
Bromley Monthly Gardening Guide
February
In February, you can start Geranium indoors, start Snapdragon indoors, start Artichoke indoors, start Tomato indoors, and start Cauliflower indoors.
March
In March, you can sow Pea outside, sow Parsley outside, sow Crimson Clover outside, start Sage indoors, and sow Bok Choy outside.
April
In April, you can sow Zinnia outside, sow Fenugreek outside, sow Alyssum outside, sow Zucchini outside, and sow Milk Thistle outside.
May
In May, you can sow Black Bean outside, sow Chia outside, sow Sesame outside, sow Mung Bean outside, and sow Watermelon outside.