Managing a Massive Philodendron Selloum: Root Pruning and Downsizing

When a 60-Year-Old Plant Outgrows Its Home

A 5–6 ft diameter Philodendron selloum with four 4-inch trunks is root-bound in a huge pot. Repotting up is impractical; instead, root prune to fit a smaller container.

Root Pruning Procedure

1. Select a pot 2–4 inches smaller in diameter.
2. Remove plant; use a long, sharp knife to slice 3–4 inches off the root ball all around (including bottom).
3. Place 2 inches fresh soil in new pot, set plant, fill sides with fresh mix.
4. Water thoroughly; keep in bright indirect light.

Why This Works

Bonsai artists use root pruning to keep large trees small. The plant stays healthy, just doesn't grow larger. Repeat every 2–3 years.

Alternative

Donate to a bank lobby or business with high ceilings. Consider replacing with a dwarf cultivar like 'Hope' or 'Little Hope' for manageable size.