I grow about 50 Phal hybrids and species successfully. They are in various media from bark, to sphagnum moss, to mounted. For some reason, my Phal speciosas always eventually die. I've bought them from different sellers, and tried both small seedlings and quite large young plants, in bark and in live sphagnum. I just lost my best ones, at the height of Summer, after losing two smaller ones in Winter. Any idea what it is that Phal speciosa needs that's different from what other Phals need? I adore this plant and would love to be able to grow it reliably. Thanks.