Plants Cold

I am growing in my attic so basically it is the tempature of outside. This isn't a problem because it is warm around here usually but the past few days have been freezing cold, therefore my plants were cold. Is this going to hurt/retard them?

dude, i also have a plant growing in my attic, and its the same temp as outside, and lately its been around -5, which i can only imagine is hurting the plants. i have vents in my attic, so i stapled gunned garbage bags over the vents and put a heater on in the room so it stays around 10 degrees but i cant get it much higher than that due to the cold weather.

hydrofiend said:

I am growing in my attic so basically it is the tempature of outside. This isn't a problem because it is warm around here usually but the past few days have been freezing cold, therefore my plants were cold. Is this going to hurt/retard them?

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I would if you can, keep the lights on the plants when it is coldest outside. When it is warmer outside, the lights can be off. This should prevent any major shock the plants could go in.