all of my patio magnolias have been defoliated by….some sort of insect1 any ideas and what should i do??

Question

all of the leaves have been eaten away right down to the stem. in the first instance they look like cobwebs then the remainder gets eaten. always at night . I have never found a fly,grub or catapilla

Answer 1

You have a bad spidermite issue, it sounds like! This is devastating, and usually fatal by this point.

You may be replacing the tree soon. In the future, you will want to catch them as soon as you see signs of spotting or webbing. This article will help: https://www.gardeningknowhow.com/plant-problems/pests/insects/spider-mite-treatment.htm