Yellow Eggs on Orchid Bark & Leaf Sunburn: Diagnosis and Care

In Budapest, your Phalaenopsis (3 months old) had white/yellow egg-like spots on bark. You repotted, removed dead roots. Now, after moving to a sunnier spot, a dark, transparent, pinched-looking spot appeared on a leaf with white bumps. You ask about the eggs, the leaf spot, and general water/light needs during/after bloom.

Yellow "Eggs" = Wood Fungus (Indicator of Overwet Mix)

Most likely a harmless wood-decay fungus thriving in damp bark. Not scale (which would be on plant tissue too). Repotting was correct. Keep mix drier between waterings—fungus won't return if conditions improve.

Leaf Spot = Sunburn Through Glass Lens Effect

Glass can focus light, burning a spot. Phalaenopsis prefer east windows (gentle morning sun). Use sheer curtains or move back from intense light.

Watering: Finger Test, Not Schedule

Water when mix feels barely moist several inches down. Surface can be dry while center is wet. No seasonal variation—Phalaenopsis don't have a rest period.

Light for Blooming

Leaves should be yellow-green, not dark green. Distinct shadow test: finger between light and leaf should cast a clear shadow.

Metal Cache Pot Warning

Ensure no standing water in the metal outer pot. Metal ions may leach into mix over time.