The Q&A Archives: When Is The Average Day Of Last Frost Date?

Question: When is the average date for the last frost for me? I live on the South Shore of Long Island and according to the USDA Plant Hardiness Zone Map, I am in between zone 6b and 7a (I because I live 1 mile from the ocean)

Answer: While the hardiness zones can be a useful guide when selecting perennials and woody ornamentals, the zones are based only on average winter low temperature and so the average las spring frost dates are a separate issue. Just as your specific zone can be affected by the microclimate in your garden, so can your frost date, so use it as a guide. Your County Extension should be able to give you that date. Their telephone number is 727-7850.

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