tomato temperature

Toledo, OH(Zone 5b)

I've heard different opinions in terms of overnight temperature for when to plant your tomatoes outside for good. What's the "correct" answer for when you can plant them outside? I don't want to put them out too early and have them get too cold at night still since the temps are in the low-to-mid-40's sometimes here yet.

Fredericksburg, VA(Zone 7a)

I put mine out above 40 at night. Lower than that and some of them were damaged by frost. I covered them and they recovered though. If there's a chance of going below 40's be prepared to cover them in case your area actually frosts.

Pelzer, SC(Zone 7b)

I wait for above 50, maybe 55. Sooner and they survive, but "stall" in their growth.

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