Cat Palm Spider Mites and Yellowing Leaves: Humidity Is Key

Jerry repotted a 5-foot cat palm a month ago. Now sees "dusty stuff" on leaves (spider mites) and yellowing. Asks how to treat mites and if yellowing means too much light.

Expert Answer: Cat palms need constant moisture but not standing water—soil should be spongy with peat moss. Water when surface feels dry; empty tray within 1–2 hours. High humidity is essential. Spider mites attacked due to dry air and stress. Shower the plant to dislodge mites, then spray daily with 50/50 water and rubbing alcohol to humidify and kill mites. Continue misting 1–2 times daily while heating/AC runs, or use a humidifier. Yellow leaves = dry air/soil, not too much light (bright light is fine, just no direct sun).