White Spots in Orchid Pot: Perlite, Not Fungus

Identifying the Spots

The white clusters in your new phalaenopsis pot are perlite—a standard potting mix component that improves aeration. Not fungus or bacteria. Algae on the pot surface is harmless but indicates constant moisture.

Recommended Action

Roots appear healthy but cramped. Repot after blooming into a slightly larger plastic pot with drainage holes. Use fir bark-based orchid mix with perlite. Soak mix before use. Rinse roots, remove any mushy ones. Water weekly after repotting.

Proactive Care

Don't wait for problems—repot mass-market orchids promptly after purchase. Their mixes often degrade quickly. This plant's healthy roots are a great foundation for long-term success.