Red Edges on Phalaenopsis Leaves: Too Much Light, Not Disease

Red Leaf Margins = Sun Stress, Not Illness

Phalaenopsis leaves edged in red (especially on red-flowered varieties) are responding to excessive light—not a pathogen.

The Fix

• Move to bright shade.
• Allow only 1–2 hours of early morning sun.
• Red coloration will fade on new growth.

Why It Happens

Anthocyanin pigments (red) act as sunscreen. They're protective but signal the plant is at its light limit. Back off, and the plant will grow greener, larger leaves.

No treatment needed—just relocation.