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Title: hardening off and night time temperature
Post by: aquilegia on May 17, 2010, 17:34:07

I'm starting to harden off my tender crops. What nighttime temperature is the lowest that they will live out comforatbly without protection?

I will leave it at least another week or two before putting them out so they have time to acclimatise.

I've got things like courgettes, squashes, french beans, sweetcorn, tomatoes, cucumber...

Title: Re: hardening off and night time temperature
Post by: Tee Gee on May 17, 2010, 17:39:07

I try to keep mine at no lower than 40°F (8°C) and I avoid watering in the evening as this can cool the root system.

I find that if I keep them moderately dry the root temperature is around 5°F (1°-2°C) warmer than the surrounding air temperature!

Title: Re: hardening off and night time temperature
Post by: aquilegia on May 18, 2010, 10:47:00

thanks! Good point about the watering.

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