What are the white flies?
White flies are minute sucking insects with white powdery wings. They can occur in very large numbers and are found on the undersides of leaves. The larva are 1/30″ scales which are legless and translucent. The adults and nymphs suck juices from the plant and secrete a sticky, sugary substance called honeydew. Sooty mold and black fungus grows on the honey dew. This also attracts aphids and spider mites. Their feeding can also spread viral diseases. You can catch adults on yellow sticky traps. Spray with insecticidal soap or attract native parasitic wasps.
