insect-infested

/ˈɪnsekt ɪnˈfestid/

a place, such as a home or crops, is overrun or occupied by a large number of insects that are causing damage, harm, or posing a health risk.

Pruning - Dogwoods seldom need pruning except to remove dead, injured, diseased, or insect-infested branches.
山茱萸一般不需要剪枝除非需要去除枯枝，残枝或者有虫害的枝桠。

单词造句:

来源于infested/ɪnˈfestid/v.害虫、野兽大批出没于( infest的过去式和过去分词 ),遍布于;adj.为患的，大批滋生的（常与with搭配）