How It Works Start My Diary Login Sign Up
Fibro_Witch started grow question 4 years ago
So I was hoping to move these guys outside soon into 5 gallon pots in my garden. I know marijuana can be pretty hardy, but I was looking at the extended forecast and it's still dipping down into the mid-high 40's F at night. What temp range can I safely move them outside?
25 weeks
FibroWarrior Fibro_Witch
+1 strain
105 comments · 4 years ago
Week 7
Techniques. Defoliation
Stick answered grow question 4 years ago
Hi there! Strong genetics can handle cold temperatures, as low as 50°F (10°C). Anything below will hurt the plant's tissues. However, 50°F is still under the optimal range, and may result in slow growth and bad photosynthesis, so you probably should wait another week or more depending on your local forecast. I'll be around, keep us up-to-date and good luck!
ShaggyGrower answered grow question 4 years ago
I've just gone through very low media temperatures, and plants don't like low temps I've found. Air temp is one thing, but don't forget media temp. If the media/pot is not warm/hot, they'll stop growing or even go into reverse (leaves get smaller as they tighten up with the cold).

Unless you have to for space reasons, I'd keep them somewhere warm until it's warm/hot enough outside. Perhaps even use the sun during the day and bring them in at night when it's too cold.

Media temp must be >20c for decent growth to continue in my experience. Really young plants love ~28c.
FlavoursUk answered grow question 4 years ago
Anything below 14 Degrees C can kill your plants. Unless they are strains bred for the colder climate. You can always put them out in the day and bring them inside overnight, until you get steady night temps of around 14 Degrees C or above.