Vanda Flower Spikes Stalling: Light Is the Key

Primary Issue: Insufficient Light

Vandas need 15-16 hours of bright light daily—just short of burning. Your 5-6 hours explains stalled spikes.

Light Quality Indicators

• Yellow-green leaves = good light.
• Deep green = too little.
• Slight reddening = optimal (not burning).

If More Light Isn't Possible

• Patience: mature plants (2.5 ft) may take years to rebloom after suboptimal care.
• New roots are encouraging—plant is responding to care.
• Spikes may actually be new roots (similar early appearance).

Fertilizer Note

Bloom booster weekly is fine; switch to balanced (20-20-20) during active growth.