heat stress houseplants

Ideal Temperature for Houseplants (Day and Night Ranges) Most houseplants grow best between 65 and 75°F (18 to 24°C) during the day, with a drop to roughly 55 to 65°F (13 to 18°C) at night. That 10 to 15 degree nighttime dip mirrors what plants experience outdoors and actually supports healthier growth for many species,…