Care: Never let a jade plant dry out completely. But also, do not water a jade plant too often, as this can cause root rot. Don’t water your jade plant on a schedule. Rather, water your jade plant when the top of soil is just dry to the touch. If your jade plant is losing leaves or has leaf spots, this is most commonly caused by too little water. They need full sun in order to grow properly. If they do not have full sun, they may become stunted and leggy.