I have a Masd. Machu Pichu which is half Masd. coccinea. Last summer it spotted similar to yours only worse. It grew right beside another Masdie with other parentage and that one didn't spot at all. I am quite sure it was heat stress. The spots never spread and all the new growth is clear and healthy looking. Masd. coccinea is a very cool grower with year round temps at a maximum of 55 to 58F according to OrchidWiz. I have no problem keeping it cool in winter, but in summer it grows somewhat warmer where I keep it. I would watch it carefully but suspect it was stress induced.
|
Hybrid Mode
