Help! Yellow spots on my Vanda Denisoniana leaves?
These yellow spots just suddenly appeared this week. None of my other vandas have these.
I think there's some black spots on the main stem now forming too...so i started hanging the plant upside down..
This vanda is located on the forefront of my plastic greenhouse so it gets the most sun... but not too much sun since my GH is facing east and gets only about 2 hours of sun in the morning.
(Temps this week in SoCal have been in the high 60s, low 70s.)
Is this fungal? Bacterial? Please help!!!!
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