Dendrobium Magnum Culture

[Roger Horman]

I recently purchased a bare root Dendrobium Magnum from Venezuela and have found no culture info to date. After soaking the roots overnight in water, I mounted this large two-foot-long plant on a sheet of cork bark and wrapped the roots in a ball of sphagnum. It is in our warm to hot greenhouse. The roots were very dry and hard at purchase. Does anyone have culture info for this species? Any suggestions for an alternate method of planting? Thanks.