Hello All I have a Jade plant now 29 yrs old. A few years ago after being outside all summer it got infested with white bugs which attacked it where the leaves join the stems. Didn't do a lot of damage but were spreading quickly and I did't want them to get onto my other plants. At the time I was living in Chilliwack BC so asked the advice of a well-known garden guru there. He recommended Malathion. I sprayed the entire plant and about 5 days later ALL the leaves fell off. I almost cried. I was too upset to go back to him for an explanation and after a few weeks it began to show new growth at the tips of the stems. Does anyone know how or why this happened?