Rescuing a Corn Plant from Root Rot Due to Poor Drainage

Rescuing a Corn Plant from Root Rot Due to Poor Drainage

A 15-year-old corn plant (Dracaena fragrans) wilted after aluminum foil was placed on the soil to deter a cat. The foil trapped moisture, the soil turned putrid, and standing water accumulated in the decorative foam pot with no drainage hole. The owner replaced some soil but the plant remains droopy and sad.

Diagnosis: Advanced Root Rot

Wilting despite wet soil means roots have rotted and can no longer absorb water. Two fatal errors caused this:

1. Pot far too large—a 21-inch pot for a 5-foot plant. A 10-inch pot would be appropriate.
2. No drainage hole—water pooled at the bottom unseen for a long time.

Emergency Surgery

1. Remove the plant from the pot. Let loose soil fall away.
2. Inspect roots: healthy roots are firm and light-colored; rotted roots are soft, dark, and mushy.
3. If no healthy roots remain: take 6–8 inch stem cuttings from the top, root them in water or damp perlite, and discard the rest.
4. If some healthy roots exist: pot the plant in the smallest container that fits the roots, using a 50/50 peat-perlite mix. Ensure the pot has drainage holes.

Future Prevention

• Never use pots without drainage holes.
• Keep plants moderately pot-bound.
• Water only when the top quarter of soil is dry.

For root rot and corn plant care guides, email wcreed@HorticulturalHelp.com.