Dr. Phyto

American sycamore

Platanus occidentalis

Diseases & pests on this plant

• plane anthracnoseApiognomonia veneta

  Brown angular leaf lesions following veins, twig dieback + cankers on young shoots, premature defoliation of entire trees in epidemic years, witches' broom symptoms in chronic infections, characteristic black fruiting bodies on dead twigs in winter.

• almond leaf scorchXylella fastidiosa subsp. multiplexEU-notifiable quarantine organism

  Marginal leaf scorch progressing inward, premature leaf drop on individual branches, reduced nut size and oil content, gradual canopy decline over 3–5 years.