Variegated Pittosporum Dieback: Shade, Drainage, and Disease

Allen's 8-year-old pittosporum hedge in Houston lost 40% of plants last summer—browning, curling leaves, death. Two landscapers disagreed: one blamed a local disease, the other excessive watering (every other day, 7 min). Allen hesitates to replant without knowing the cause.

Key Cultural Factors

• Pittosporum prefers shade; full sun causes stress.
• Requires well-drained soil—standing water is fatal.
• Hardy to ~20°F; freeze damage shows as split trunks in spring.

Recommended Actions

1. Apply broad-spectrum spray (e.g., Triple Action Plus—miticide, insecticide, fungicide).
2. Water deeply (15–20 min) once weekly (twice in extreme heat).
3. If no improvement, re-evaluate with photos.