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When to start hardening off in Upstate New York

18 years ago

I want to use Trudi's easy hardening off method for my tender annuals I've started under lights and I'm not sure when I should start the process. I'm most concerned about my coleus, basil and tomatos. Last year I killed my first batch of basil because I left them out in too cool weather.

If the process takes two weeks to completely harden them off, do I start two weeks before Memorial Day when I usually plant out, or should I wait until the end of May to start hardening them off?

Here is a link that might be useful: Trudi's easy hardening off method

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