13+ Red Spots On Cactus. Condensation adds to the ambient humidity and promotes spore growth. ) and saguaro in the wild as well as cacti in landscaping, gardens & kept as houseplants ?
Looks like paint splatter but it is not.
Warren special to the arizona daily star mar 30, 2017 mar 30, 2017 updated may 16, 2017; Symptoms of mite infestation include rusty brown spots that appear at the top of the plant and the presence of mite webs. ) and saguaro in the wild as well as cacti in landscaping, gardens & kept as houseplants ? If left untreated, mites kill your cactus by eating the entire outer layer of tissue off your plant.