Temperatures consistently below 60 will start to wreak havoc with the roots' ion exchange capabilities. Soil chemistry becomes REALLY twitchy in low temps... you got acidic wet soil and cold temperatures, dead plants are just around the corner.
stinkyattic Reviewed by stinkyattic on . Min Temp How low temp is dangerous to young plants? My plants are at about 22 C (72 F) later in the day and night. Its probably not a problem right now, I just want to know what kind of range I should be worried about if it ever gets there. Rating: 5