Oncidium Repotting in Connecticut: Bark Over Moss, Pot Size, and Light

Oncidiums need more light than Phalaenopsis. Repot pot-bound plants in slightly larger pot with small bark (not sphagnum moss). Wrinkled leaves = past underwatering—won't un-crinkle. South window > west for light/heat balance.

Repotting Rules

• Pot: barely larger than root mass.
• Media: small orchid bark (moss rots roots).
• Wrinkled leaves: permanent; remove if unsightly.

Light Upgrade

• West window = afternoon heat risk.
• South/east window = better for light green leaves.
• Connecticut: full morning sun in east window works.

Key Takeaways

• Oncidiums ≠ Phalaenopsis: more light, bark media, snug pot.
• Wrinkled leaves = history; prevent on new growth.
• South/east window beats west for consistent light.

Switch to bark, brighten light, and accept wrinkled leaves as past lessons.