Dendrobium Phalaenopsis Yellow Leaves: It's Dormancy, Not Distress

Yellowing = Normal Rest Period

Dendrobium phalaenopsis (den-phal) types go dormant. Yellowing/leaf drop = natural, not a problem.

Critical: DO NOT WATER

Watering dormant den-phals = certain death. Only light morning mist if canes shrivel severely. Otherwise, leave alone completely.

Spring Wake-Up

When new growth eyes swell at base → resume watering (barely moist between) and weak feeding.

South Window = Good

Bright light during growth; they'll tell you with leaf color (medium green = perfect).

Bottom Line

Your plants are doing exactly what they should. Resist the urge to "help"—rest in peace until spring!