Q.Rubber Plant Trees
I have my rubber tree outside and it is thriving. What is the lowest temp it can tolerate? When do I need to make sure I bring it indoors?
A rubber tree is a tropical plant. The general rule for tropicals is no temp lower than 40F, although rubber tree will tolerate a few hours of low 30's. You should definitely bring it in before frost. You should probably begin now to acclimate it to indoor life: https://www.gardeningknowhow.com/houseplants/hpgen/acclimate-plants-indoors-winter.htm