Semi-hydroponic Orchid Growing Ray Barkalow, Wednesday, October 7, 2015 Availability : Member-Only Tags : Culture Watch Now This is a member - only webinar. If you are a current member, please sign in to access this webinar. If you are not yet a member, learn about the benefits and sign up todayIf your membership has expired, please renew your membership to access this webinar. Ray Barkalow, of First Rays Orchids, shows us how we can successfully grow orchids semi-hydroponically and the theory behind it. Ray pioneered the technique which is now being adapted in various forms.