Orchid Fungus Panic: White Fuzzy Roots = Repotting Time

Don't Panic—It's Likely Harmless

White fuzzy fungus on roots usually means degraded potting mix staying too wet. The fungus itself rarely harms orchids.

Don't put mix in pot bottom ("crocking")—it rots. Use inorganic material (rocks, clay shards) if needed.
Pot should fit roots snugly—too large = loose plant. Deeper planting in smaller pot anchors better.

Orchids: Assessing Orchid Root Health and Repotting Timing: Trim Dead Roots, Wait Until After Bloom; Basic Care for New Phalaenopsis and Oncidium Orchids; Moss and Decorative Rocks on Orchid Roots: Remove or Leave?; The Dangers of Ice Watering: Saving a Yellowing Phalaenopsis; Roots Growing on Orchid Canes: Dendrobium Keikis?; Repotting Your New Orchid: What to Do With Aerial Roots; "Cymbidium" with Long Skinny Appendages: It's a Phalaenopsis!; Shriveled Aerial Roots on New Phalaenopsis: Humidity Issue; Managing Root Rot in a Blooming Phalaenopsis Orchid; Phalaenopsis Orchid with Aerial Roots: Care and Repotting Timing

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