Whiteflies will suck the sap out of plant leaves, causing them to yellow and weaken. Removing or hosing down the infested leaves can help quell these pests. Companion planting with flowers that repel ...

Whiteflies are small, white-winged, low flying insects that flit erratically when disturbed. Ten species are common in California. Whiteflies feed on many crops, weeds, ornamentals, shrubs and trees, ...