Wanting to learn about Zygopetalum. Got some blacks spots and tons of roots.

[Pookiewillis]

Hi.
This is my first of hopefully many posts and discussions here.
Zygopetalum Debbie De Mello 'Honolulu baby' is the variety. I live in in a 10a hardiness zone in a med. density urban environment. The orchid is on my desk at an East facing window.
The orchid is doing fine right now except for some black spots on some of the new growth. I was misting them every other day and had stopped when these spots started After reading through the some of the posts, I'm still a bit unsure what to think.

It just finished its flower a couple weeks ago and I am considering up potting into something else (if it needs it). If its time, I'd also like to learn how to make some homemade orchid potting media; I really would rather not buy them and enjoy foraging for things.

What would also really help me is if anyone else could share their experience with this cultivar and a bit about the conditions they really thrive in...

Here are some images:
Flickr
Flickr
Flickr




Thanks!

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