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Carmarthenshire 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 Carmarthenshire is May 1st. We recommend waiting until May 15th before planting tender crops outdoors.
First Frost Date (Autumn)
The average first frost date for Carmarthenshire is November 10th.
Growing Season
Based on historical data, the growing season in Carmarthenshire is approximately 193 days long.
Carmarthenshire Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting.
Carmarthenshire Monthly Gardening Guide
February
In February, you can start Begonia indoors, start Geranium indoors, start Petunia indoors, start Celery indoors, and start Lavender indoors.
March
In March, you can start Kale indoors, start White Sage indoors, start Brussel Sprout indoors, start Basil indoors, and start Broccoli indoors.
April
In April, you can sow Arugula outside, sow Cilantro outside, sow Lettuce outside, sow Sweet Pea outside, and sow Alfalfa outside.
May
In May, you can sow Zucchini outside, sow Okra outside, sow Cantaloupe outside, sow Lima Bean outside, and sow Pumpkin outside.