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Lancaster Frost Dates & Growing Season
Here's the frost forecast for the next three days (last updated on December 8th, 2025 6:03 AM).
Dec 8th
Safe
Dec 9th
Safe
Dec 10th
Safe
Last Frost Date (Spring)
The average last frost date for Lancaster is May 1st. We recommend waiting until May 15th before planting tender crops outdoors.
First Frost Date (Autumn)
The average first frost date for Lancaster is November 5th.
Growing Season
Based on historical data, the growing season in Lancaster is approximately 188 days long.
Lancaster Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting.
Lancaster Monthly Gardening Guide
February
In February, you can start Petunia indoors, start Snapdragon indoors, start Celery indoors, start French Lavender indoors, and start Leek indoors.
March
In March, you can start Swamp Milkweed indoors, start Tomatillo indoors, start Kale indoors, sow Spinach outside, and start White Sage indoors.
April
In April, you can sow Lentil outside, sow Chives outside, sow Lupine outside, sow Swiss Chard outside, and sow Bok Choy outside.
May
In May, you can sow Watermelon outside, sow Hollyhock outside, sow Lima Bean outside, sow Anise outside, and sow Babys Breath outside.