Re: FreezePruf - It's here!
The product provides different levels of protection depending on the plant it's sprayed on, which is why it says "up to 9.4°" of protection. It's good for extending the growing season, which is what it did for me... but I highly doubt it's good for complete overwintering. In my Musa basjoo/sikkimensis case, it did provide protection down to about 27-28°F (which is about 5° of extra protection), extending their growing season for quite a few weeks into fall. For less hardy ones, I'd trust the product to protect from frost, not freezes. If you normally protect your plants via some sort of insulation, and find that you SOMETIMES end up losing them anyways, I'd try the FreezePruf IN ADDITION to covering and see if it lessens the loss, but I wouldn't replace the insulation with only spraying.
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