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Caerphilly Frost Dates & Growing Season
Here's the frost forecast for the next three days (last updated on December 8th, 2025 6:08 AM).
Dec 8th
Safe
Dec 9th
Safe
Dec 10th
Safe
Last Frost Date (Spring)
The average last frost date for Caerphilly is May 1st. We recommend waiting until May 15th before planting tender crops outdoors.
First Frost Date (Autumn)
The average first frost date for Caerphilly is November 10th.
Growing Season
Based on historical data, the growing season in Caerphilly is approximately 193 days long.
Caerphilly Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting.
Caerphilly Monthly Gardening Guide
February
In February, you can start French Lavender indoors, start Lavender indoors, start Snapdragon indoors, start Rosemary indoors, and start Celery indoors.
March
In March, you can start Black Eyed Susan indoors, start White Sage indoors, start Rue indoors, start Basil indoors, and start Brussel Sprout indoors.
April
In April, you can sow Watercress outside, sow California Poppy outside, sow Chervil outside, start Cantaloupe indoors, and sow Kale outside.
May
In May, you can sow Cosmos outside, sow Lemon Balm outside, sow Fenugreek outside, sow Zinnia outside, and sow Gladiolus outside.