Fixing a Leggy, Yellowing Dieffenbachia

Why Your Dieffenbachia Is Declining

A tall, bare stem with a leafy top is classic for aging Dieffenbachia. The lower leaves yellow and drop because the stem cannot produce new foliage. The plant becomes a "tall umbrella" unless rejuvenated.

Best Solution: Cut Back and Restart

1. Cut the top off, leaving 6 inches of stem above soil.
2. The plant will resprout with multiple stems, creating a fuller shape.
3. You can also encourage basal shoots by nicking the stem near a node.

Cultural Adjustments to Prevent Recurrence

• Light: Move closer to bright, indirect light to reduce stretching.
• Water: Water only when soil is dry; cut back in winter.
• Fertilizer: Hold off until June; use half-strength liquid feed bimonthly in growing season.
• Temperature: Avoid drafts, heat vents, and sudden changes.
• Dormancy: Allow a winter rest period to slow top growth and reduce stress.

Safety Note

Dieffenbachia sap is toxic—wear gloves, wash hands thoroughly after handling, and keep away from children and pets.