Deshojo Maple Bonsai Sudden Branch Death

Verticillium wilt: Soil fungus; sudden branch flagging; vascular streaking.
Root damage: Physical, chemical, or waterlogging affecting one root sector.
Girdling root: Root circling trunk cuts off one branch's supply.

20-year-old Deshojo Maple (Acer palmatum 'Deshojo') in UK; one branch died in <7 days; no pests visible; sprayed insecticide.

Possible Causes

Sudden single-branch death in mature maple often indicates vascular wilt.

Bonsai: Sticky Whitish Sap on Money Tree: Benign Exudate; Does Digging a Hole in Rainy Climates Cause It to Expand?; Centipede Grass Establishment: Sulfur, Seeding, and Tifblair Tips; Young Maple Tree Form: Natural Branching Timeline and Staking Myths; Why Your Snowball Bush Won't Bloom: Pruning, Light, and Fertilizer Fixes; Boxwood Hedge Spacing and Fertilizer: It Depends on the Variety; Are Zinnias Perennials? It Depends on the Type; Why Forsythia Blooms Only on Lower Branches; Diagnosing Curling Fronds on Staghorn Ferns; Follow-Up Frustration: Answer Was Sent

Garden Articles

Plants