Sycamore Maple

Acer pseudoplatanus

Aceraceae

Mildew (Uncinula bicornis):

grayish white covering that can be wiped off with a finger. Treatment is not necessary. In extreme cases, dispose of the foliage in the fall.

Diseases Sycamore Maple

Leaf marks (Didymosporina aceris):

Only small black marks on the sheets. Later larger brown marks up to the sheet waste. Treatment not necessarily.

White spot (Cristulariella depraedans):

White, rounded spots on the top of the leaf. This often happens during wet summers. Treatment is not necessary.

Tar spot (Rhytisma punctatum):

Small, black spots in a circular arrangement on the leaf. Treatment is not necessary. This appears seldom and only on the Acer pseudoplatanus. Disposal of the foliage in the fall is recommended.

Tar spot (Rhytisma acerinum):

Large, black spots. Disposal of foliage in the fall prevents new outbreaks.

Cancer (Nectria galligena):

Fungal attack breaks open the bark. Stricken branches should be removed and burned. If the trunk is stricken the cancer should be cut out by a specialist.

Browning of leaves:

Large, brown spots. Disposal of foliage in the fall prevents new outbreaks.

Galls (Drisina glutinosa GIARD):

Leaf deformations caused by a gall mite. This is not dangerous for the tree.

Verticillium (Verticillium alboatrum):

Tracheomykose (parasitic fungus illness) far spreads in gardening used soils. The fungus penetrates over the roots and clogs the line courses (brown colouring). The leaves wither. Also only parts of the tree can be concerned. An exact evaluation should make the specialist, since withered features also can have different causes (root damage, dryness etc.).

Classification Sycamore Maple

Height: 20 - 30 m

Leave: alternate, obtuse, 5 lobes, green

Bloom: May - June, hanging green grapes, inconspicuous

Fruit: winged nuts, arranged in acute-angled pairs

Branches: gray, smooth, green buds

Bark: scaly

Root: deep roots

Location: sun - half-shade

Soil: sandy to loamy

ph-value: slightly acidic to basic