Dark Green and Reddish Phalaenopsis Leaves After Division

Leaf Color Changes After Dividing a Phalaenopsis

You separated two Phalaenopsis that were growing together, cutting the fused root mass. Weeks later, the leaves are very dark green with some reddish tones. The plants are in their usual spot and have been fertilized. Is this a problem?

Interpreting Leaf Colors

• Dark green leaves typically indicate insufficient light—the plant produces more chlorophyll to capture what little light it gets.
• Reddish/purplish pigmentation (anthocyanin) usually signals high light exposure—a protective "sunscreen" response.

Why Both at Once?

This contradictory presentation often means uneven light distribution. A leaf or portion of a leaf may receive a focused beam of direct sun (like through a window pane acting as a lens), causing localized reddening, while the rest of the plant remains in lower light, staying dark green. It can also happen during acclimation to a slightly brighter spot.

What to Do

• Monitor for true sunburn: black, necrotic patches that feel crisp. If absent, the reddish tint is harmless.
• Ensure the plants receive bright, indirect light—east window or slightly shaded south/west.
• Rotate the pot weekly for even exposure.
• Continue normal care; new growth will indicate if conditions are optimal.

As long as leaves are firm, roots are healthy, and no blackening occurs, this is likely a temporary, cosmetic response to light variation—not a disease or nutrient issue.