Too Cold?

[Shovelhandle]

I've had experience where temps below 70ºF slow growth a lot. My temps were as low as 70 during the lights on time but I was able to increase this by slowing down the fan and moving the lighting transformer close to the plants. But I'm sure the night temps must be 60 or lower.

What is the acceptable temperature range for growing herb indoors?

Thanks,

Shovelhandle

Shovelhandle Reviewed by Shovelhandle on 03-24-2008. Too Cold? I've had experience where temps below 70ºF slow growth a lot. My temps were as low as 70 during the lights on time but I was able to increase this by slowing down the fan and moving the lighting transformer close to the plants. But I'm sure the night temps must be 60 or lower. What is the acceptable temperature range for growing herb indoors? Thanks, Shovelhandle Rating: 5

[grey1223]

I'm thinking you should be OK, but I'm not sure about dropping below 60 degrees. Only those of you in cold climates usually have this problem. Most of us have trouble keeping it cool enough. Is this your first time dealing with these temps.? If so I'd keep an eye on them and look for symptoms of stress.

I know those temps won't be a problem outside. Hopefully, they'll do OK. The last info I can recall stated something like 65 to 85 is their favorite range.

[stinkyattic]

Yeah, try to keep night temps above 65 if you can. I know you outdoor people don't usually have a dedicated indoor grow area that's ideal, but preventing drafts is a good place to start- I assume most outdoor growers are sticking stuff for spring in your unheated 3-season porches, sunrooms, basements, that guest room that's too cold to use, the garage... lol! Any little bit of insulation can help a lot. If it's a corner of the basement, consider hanging plastic sheeting to trap more of the ballast heat.

[Shovelhandle]

Thanks folks,
I was going to check out the hardware stores yesterday for little heaters and put it on a timer to run at lights out. But, I forgot. <G> If Spring would only warm up to normal I'd be fine.
I did put the transformer in with the plants for now though, but that only helps the "daytime" temperatures.

Sho

[fiddyonefiddy]

i use an oil filled heater
keeps the nighttime temps above 60. home depot 69.00
may all be put up but you might check.

[stinkyattic]

Ditto on oil filled heaters. They seem not to strip moisture out of the air and lead to heat stress like the fan/coil ones do. Plus the heating is very even. I used one back when I was growing in a cellar and was happy with it.