Monitor houseplants for insect problems that often occur when plants become stressed due to insufficient light, overheated rooms or improper watering and fertilizing techniques. Isolate new houseplants or gift plants before adding to your existing plants. Pests to look for include spider mites, scale, mealybugs, whitefly and fungus gnats. Moana recommends Bonide Insecticidal Soap and Bonide Systemic Houseplant Insect Control (not for indoor citrus) for most insects. Use Bonide All Seasons Horticultural & Dormant Oilto control spider mites onindoor citrus. Moana recommends Summit Mosquito Bitsfor control of fungus gnats.
Most houseplants require less water and much less, if any, fertilizer, because they slow their growth during their semi-dormant winter period.
Wipe dust off houseplants regularly; clean plants are healthier and less susceptible to disease and pest infestations. Moana recommends Schulz Plant Shine; use according to directions.