Phalaenopsis Yellowing Leaves: Fungus from Evening Watering

Two Phalaenopsis: first lost all leaves (yellow, fell) after bloom. Second finished bloom, cut at 3rd node, now two bottom leaves yellow/fallen, four left. Both in orchid pots, pebble trays, no direct sun/draft, weekly water.

Watering Time Is Key

Watering afternoon/evening leaves water in leaf bases overnight → fungus. Black sooty base = fungus. Water early morning so leaves dry by night. Air movement helps.

Plant 1: Likely Gone

No leaves = probably dead.

Plant 2: Emergency Care

1. Check leaf bases for black soot.
2. Wipe fungus with alcohol Q-tips.
3. Dust cinnamon in leaf crevices.
4. Check crown for fungus—if present, plant is doomed.
5. If crown clean, new leaf may emerge.

Humidity Can Be Too High

Excess humidity slows evaporation, keeps media wet. Counter with fan (indirect airflow).