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Where I live in Australia the cyms all grow on trees :) Occasionally you find one growing on the ground but it's usually when the branch they were on has dropped off. I have Cym suave and Cym madidum mounted in various ways, they like their roots to stay fairly moist but dry air doesn't seem to worry them too much and in winter here we can get some pretty heavy duty frosts and yesterday it was 45 degrees celcius and they grow fine under the trees and under my patio. I go out and throw some water from the hose on them every day until they are established and every few days once they get some good root growth happening and they seem to do fine.

Does Australia have native tillandsia?

Quote:

Originally Posted by King_of_orchid_growing:) (Post 546062)

I don't think that your water is killing the Catts and the Phals. I think there are other factors at play.

Cymbidium aloifolium is actually an epiphyte or lithophyte. Sometimes it can be found as a semi-terrestrial as well. From the documentation, it's reputedly an intermediate to warm growing orchid. However, I really don't know what the plant can tolerate in terms of low end temperatures.

There are definitely orchids that grow terrestrially which can tolerate our cool winters here in SoCal. One of them is a native to China - Bletilla striata.

You may also try some of the other Bletilla species such as Bletilla formosana or Bletilla ochracea.

I don't really know what else it could be.
When I use RODI water they thrive for me...
The water also kills fish... sadly...
And lots of garden plants...
I'm actually beginning to suspect it's the pipes or something.

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Quote:

Originally Posted by greengarden (Post 546065)

Hmm.....
I think....
I think....

That you just helped create a monster.

I might go purchase a few of those cheap NOID cyms and sick it in my tree...
And some oncidiums, and intergenerics, and brassia... and tenuifolia... and whatever else I can find cheap locally.

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