last frost

Planting season's start

The last frost is the final occurrence of freezing temperatures in spring, after which the growing season begins.

Gardeners track their region's average last frost date to know when it's safe to transplant seedlings outdoors: Don't set out your tomatoes until after the last frost.

The term pairs with first frost, which marks autumn's end of the growing season.

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seedlings · tender plants · garden · tender · cold · ice · morning · April · May · soil · warming · growing season · almanac · hardiness · zone · delicate · transplant · danger

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seasonal timing in growing cycle

last frostfirst frost

Season's earliest freeze

autumn frost · killing frost

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