| Perhaps the bark isn't stay moist long enough to encourage the roots to adhere. Bark in pots stays moist way longer than bark on logs.
It could also be the orchid... I have both Laelia anceps and Laelia superbiens mounted on 5 ft plus avocado branches and they both receive the same amount of water but the anceps roots are completely plastered to the bark while the superbiens roots are half on and half off. |