frost zone

frost zone

[′frȯst ‚zōn]
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After a couple of years, the roots will have penetrated into the earth beyond the frost zone so won't require such mulching permanently.
Tecomate Seed offers Frost Zone ($19.99/4 lbs.), which contains a blend of seeds chosen specifically to thrive in colder climates.
Frost Zone includes a high-sugar perennial grass, white clover and chicory.
Protect plants from frost Zones 7-9, 14-17: If freezing temperatures are predicted, make sure plants are well watered (dry plants are more susceptible to frost damage).