Phalaenopsis Spike Tip Yellowing After Cutting: What to Do

Cut Spike Turning Yellow, Plus Lower Leaves Yellowing

You cut your Phalaenopsis spike above a bud after flowers fell. Now the cut tip is yellowing past two nodes, and two bottom leaves have yellowed. The plant gets indirect light (leaves face away from sun).

Spike Yellowing

Some spikes simply die back after cutting. If yellowing continues downward:

• Cut again 1 inch into green, healthy tissue.
• If it keeps yellowing, cut the entire spike off at the base.
• Plant will then produce a new basal spike next season.

Bottom Leaves Yellowing

• One bottom leaf yellowing/year is normal (2–3 year leaf lifespan).
• Two in quick succession suggests a problem—often crown/root rot from evening watering.

Critical Question: Watering Time and Method?

Do you water from above in the afternoon/evening? Water on leaves overnight → fungal infection at leaf base (black sooty area) → leaf loss.

• Switch to morning-only watering.
• Water at the pot, not over leaves.
• Check crown for black fungus; treat with alcohol if found.

Next Steps

1. Recut spike into healthy green tissue.
2. Adjust watering to morning only.
3. Inspect roots at next repotting (spring).
4. Fertilize weakly weekly during active growth.

One or two yellow bottom leaves isn't catastrophic, but combined with spike dieback, it signals cultural issues to correct.