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Vale of Glamorgan Frost Dates & Growing Season
Here's the frost forecast for the next three days (last updated on December 8th, 2025 6:09 AM).
Dec 8th
Safe
Dec 9th
Safe
Dec 10th
Safe
Last Frost Date (Spring)
The average last frost date for Vale of Glamorgan is April 20th. We recommend waiting until May 4th before planting tender crops outdoors.
First Frost Date (Autumn)
The average first frost date for Vale of Glamorgan is November 20th.
Growing Season
Based on historical data, the growing season in Vale of Glamorgan is approximately 214 days long.
Vale of Glamorgan Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting.
Vale of Glamorgan Monthly Gardening Guide
February
In February, you can start Leek indoors, start Cabbage indoors, start Tomato indoors, start White Sage indoors, and start Aubergine indoors.
March
In March, you can start Brussel Sprout indoors, start Pumpkin indoors, sow Poppy outside, sow Sorrel outside, and sow Crimson Clover outside.
April
In April, you can sow Lentil outside, sow Zinnia outside, sow Swiss Chard outside, sow Nasturtium outside, and sow Hyssop outside.
May
In May, you can sow Jute outside, sow Butterfly Pea outside, sow Lima Bean outside, sow Watermelon outside, and sow Sesame outside.