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 ...

From fungus gnats to mealybugs, here’s what’s bugging your plants—and how to treat minor issues and major infestations. Reviewed by Joseph Tychonievich Whether you grow a couple of African violets, ...