Growing Orchids in Rockwool

by Greg
(Auckland)

Although this is not a hydroponics question I see that you make mention of Rockwool as a growing medium and I was wondering if you have any advice or if you could point me to information about growing orchids in Rockwool. I can't find any authoritative information on the subject

I have in the past used a mixture of 50% grated polystyrene and 50% grated Rockwool. I watered the plants once or twice a week.

I do not have any orchids for the moment, but I am thinking of starting to grow them again and I am busy refreshing my knowledge about them.

Regards
Greg