Is 8°C/46°F at night too cold for seedlings?

To me, anything under 55-60 degrees, will stop your plant from growing (especially seedlings). Any lower and your plant may become stunted/die. I experienced that in a winter garage at 50 degrees. At 70 degrees, this may not allow your plant to really reach its optimal grow capabilities. IF these are your final outdoor temps, you will be cheating your grow. If these are your starting temps for your growing season, and temps will rise, then excellent. IMO, You may need to cover the plants at night, till overnight temps get above 55 degrees or so.

I don’t think it’s a good idea..even mature plants can get in trouble with temps below 10c. Imagine what it will to a fragile seedling But hey nobody is stopping you from trying 😁 ✌️ Good luck with your grow 🌱🔥

Anything below 15°C and the plant will not grow. Also such a big difference between day and night temperature will make the plant stretch and have a high internodal spacing. If you can, you could bring the plant inside your house during the night, to avoid such low temperatures

yoo dude !! yep it s too cold.....but maybe u can you can bring them in at night time to night temps rise a bit in 2/ weeks it could be good to be let them outside 👊

Hello, bellow 12C it’s a little low but if the strain it’s cold resistance she probably will handle it just watch for burn on leaves and during the day between 19-30C it’s fine. You can always start indoor and move outdoor if you can, because on seedling she’s weak. Just keep an eye on her! Stay cool! Good grow! ✌️🏼✌️🏼