Phalaenopsis Air Roots and Yellowing Spike: Repotting Guide

A yellowing flower spike with emerging air roots signals the end of a bloom cycle and a perfect repotting opportunity. Here's how to manage both.

Yellowing Spike: Normal Die-Back

• Phalaenopsis spikes often brown/die after blooming
• Cut at base (where it meets plant) for this type
• No harm done—redirects energy to roots/leaves

Air Roots: Normal and Manageable

• Green tips = actively growing
• 2-3 inches long = mature enough to handle
• Not essential to bury, but can be guided into new pot

Repotting Now (Ideal Timing)

1. Fresh fir bark orchid mix (soak portion)
2. Unpot, rinse roots, remove mushy ones
3. Plastic pot with abundant holes
4. Positioning: If burying air roots, plant deeper; if leaving aerial, keep crown at rim
5. Add wet bark, tap to settle
6. Water thoroughly

Air Root Burial: Optional

Burying air roots isn't required. Benefits of burying:

• More stable moisture access
• Better anchorage
• Risks: breakage if brittle; deeper crown = rot risk

If roots are flexible (soak 30 min first), guide them in. If stiff, leave aerial and mist occasionally.

Fertilizer Note

Weekly fertilizing with every watering is excessive. Switch to ¼ tsp/gallon weekly OR ½ tsp every 2 weeks with plain water flush between.

Repotting now sets up a strong vegetative growth phase for next year's blooms.