Phalaenopsis in Bark vs. Peat: Why Peat Grows Faster (But Risks Rot)

Three Phalaenopsis: two in bark/charcoal (slow growth, one ant-infested, shriveling leaves), one in peat/Styrofoam (rapid new leaves, including a tiny heart-shaped one). Why the difference?

Peat Holds Water Longer

Peat retains moisture, so roots stay hydrated—great if you water infrequently. But peat breaks down in 6–10 months, turning sour and anaerobic. Annual repotting is mandatory.

Bark Dries Faster

Bark provides more air, but if it's broken down (smell for sourness), it holds water too long, causing root rot (shriveling leaves = dead roots). Repot in fresh bark, trim mushy roots.

Choose Your Trade-off

• Peat: faster growth, more frequent repotting.
• Bark: more forgiving of watering frequency, longer life.
• If you like peat results, repot the bark plants into peat-based mix.