Baidu know What's the matter with my grapefruit tree's large yellow leaves and leaf drop, what's the solution to cure it? I'm not sure if I've ever had a problem with this. I'd like to thank you for your help! I, check for pests and diseases: (key)

1, check for insect pests (red and yellow spiders: mainly distributed in the back of the leaf, red or yellow as needles; mealybugs: mainly on the leaf surface and young branches, adhering to it rarely move), these two pests especially red and yellow spiders easy to lead to the leaf yellow leaf drop. Localized yellow leaf drop.

2, check whether the tree pole is infested with asphodel, mainly asphodel's larvae, moth poles, visible powder. Will make the whole plant yellow leaf drop.

3, check whether the roots have white silk (white silk disease). It will make the whole plant yellow leaf drop.

2, a small amount of yellow leaf drop is a normal growth phenomenon, can be supplemented by fertilizer.

It is not difficult to identify the cause and determine the solution.