Hello! My Hoyas in my greenhouse cabinet have recently gotten this all over the bottom of them. I’m thinking pests? I don’t know what to do or how to treat them - it seems to be only on my Hoyas? Unfortunately my compactas and my crimson queen got the brunt of the damage 🥲 please send advice!!
Possibly flat mites. Do you have access to a digital microscope? That's about the only way to be 100% sure.
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I agree it could be pests, but I’m wondering if it could be sunburn. Is it possible the leaves got wet from misting, watering, or a humidifier nearby, and placed under a bright grow light if it’s in your greenhouse cabinet? It looks like a sunburn to me, so I thought I’d ask. Hope this helps.
0 Me gustaI was kind of thinking about flat mites! I got some miteicide - maybe that’ll help!
1 me gustaI dont *think* it could be sunburn - they have been in the cabinet for a good amount of time so i feel like i would have noticed it…? Idk its definitley something I’ll look into, thanks!
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