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Conwy Frost Dates & Growing Season
Here's the frost forecast for the next three days (last updated on January 13th, 2026 12:14 AM). You can also use the My Cozy Plant app for faster frost warnings and alerts in your postal code.
Jan 13th
False Security / Chilling Injury (Too cold for Basil)
Jan 14th
False Security / Chilling Injury (Too cold for Basil)
Jan 15th
False Security / Chilling Injury (Too cold for Basil)
Warning: The soil temperature is forecasted to drop to -0.2°C tonight. We recommend covering seedlings, tender perennials, and low-lying crops with horticultural fleece or cloches to prevent damage.
Last Frost Date (Spring)
The average last frost date for Conwy is May 1st. We recommend waiting until May 15th before planting tender crops outdoors.
First Frost Date (Autumn)
The average first frost date for Conwy is November 5th.
Growing Season
Based on historical data, the growing season in Conwy is approximately 188 days long.
Conwy Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting.
Conwy Monthly Gardening Guide
February
In February, you can start Geranium indoors, start Celery indoors, start Begonia indoors, start Rosemary indoors, and start Lavender indoors.
March
In March, you can start White Sage indoors, start Oregano indoors, start Swamp Milkweed indoors, start Stevia indoors, and sow Pea outside.
April
In April, you can sow Arugula outside, sow Swiss Chard outside, sow Hyssop outside, sow Potato outside, and sow German Chamomile outside.
May
In May, you can sow Nasturtium outside, sow Babys Breath outside, sow Okra outside, sow Zinnia outside, and sow Anise outside.