Is it best to measure temperature at the soil, or at the top of the plant?
The top of the plant is closest to the lights so its hottest, but its several degrees cooler at the soil level. So when all the guides say its best to keep temperature within a certain range, is that talking about at the soil level, or top of the plants? Or midlevel? Or....?
Thanks
The top of the plant is closest to the lights so its hottest, but its several degrees cooler at the soil level. So when all the guides say its best to keep temperature within a certain range, is that talking about at the soil level, or top of the plants? Or midlevel? Or....?
Thanks