Repotting a Root-Bound Phalaenopsis: Supplies, Technique & Aerial Roots

Your moth orchid has roots escaping everywhere—top, sides, a chaotic aerial tangle. It's screaming for space. Here's the pro approach.

Where to Buy Supplies

• CharleysGreenhouse.com — clear plastic orchid pots (many styles), premium mixes.
• The Orchid Mall (orchidmall.com) — links to dozens of vendors.
• Local: Some hydroponic stores carry clear orchid pots.

Prep: Soak the Roots

Before repotting, soak the whole root mass (in a bucket) until roots turn green. Green = pliable. Dry/silvery = brittle, snap easily.

Repotting Technique

1. Use orchid mix (not just bark) — contains bark, perlite, charcoal, etc.
2. Buy enough for several repottings (annual is ideal).
3. Lower roots into new pot while rotating the pot — guides roots in naturally.
4. Add mix, tap pot sides to settle (don't pack with fingers).
5. Stake if top-heavy.

Aerial Roots: In or Out?

Try to gently guide them in. If they resist, leave them out—they'll function as aerial roots. Never force or break them.

Post-Repot

• Water thoroughly, drain completely.
• Hold fertilizer 2–3 weeks.
• Bright indirect light (east window).

Annual spring repotting becomes routine. Your orchid will thank you with vigorous growth.