查了一些资料。 https://www.helpfulgardener.com/forum/viewtopic.php?f=4&t=63786
They hate to be wet. Mist them or spray them. Spider Mites favour a dry
place to live so if you keep your plants misted they can't survive.
矛盾:为了防止slug 要保持干燥。但是Spider Mites 又喜欢干燥
只能寄希望于它们的天敌了。希望那些土壤里的小蜈蚣能控制Spider Mites