Verticillium Wilt on Japanese Maple: Remove Tree, Soil, and Fumigate

Verticillium Wilt on Japanese Maple: Remove Tree, Soil, and Fumigate

Newly bought coral bark maple with suspected Verticillium wilt (vascular streaking in roots): remove tree, all roots, and surrounding soil. Fungus survives years without host.

Steps

1. Confirm: slice small root lengthwise; look for dark vascular streaks.
2. If confirmed: remove tree + root ball + adjacent soil.
3. Do not replant susceptible species there.
4. Fumigate with Vapam/K-Pam (liquid, pour, cover with plastic 3 days).

Alternative

If no streaking: likely transplant shock. Fertilize, water, forget Verticillium. Ask nursery to check their stock.