Member discussion regarding the methods, varieties and merits of growing tomatoes.
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April 8, 2018
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Tomatovillian™
Join Date: Oct 2014
Location: Norway
Posts: 1,049
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Polycarbonate greenhouse - hardening off necessary?
I'm wondering how much I need to harden off plants before I move them from under lights in the house to the greenhouse. The greenhouse has two layers of 8 mm double wall polycarbonate panels, so nearly all UV is blocked. I can heat up the room in the house to approximate the temperature in the greenhouse the last few days before I move them. Do they need hardening off for sunlight minus UV?
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