black walnut

Black Walnut

Juglans regia

Juglandaceae

Classification

Black Walnut

Height:

10 - 20 m

Leaf:

alternate, pinnate

Bloom:

May, inconspicuous

Fruit:

stone-fruit (nut), green fruit shell

Branches:

olive, thick

Bark:

gray, smooth, later covered in bark and black

Root:

deep roots

Location:

sun to half-shade

Soil:

sandy-loamy to clayey

ph-value:

slightly acidic to basic

Diseases:

Black Walnut

Leaf spot illness (Marssonina juglandis)

first small brown spots in the middle, light then more extensive. Black discoloration on the green nuts. Action: Leaf disposal in the fall.

Gallmite (Aceria erinea)

Changes in the leaf are caused by mites. This is not dangerous for the tree.

Gallmite (Aceria tristriata)

Changes in the leaf are caused by mites. This is not dangerous for the tree.

Fungi


Dryad's Saddle or Pheasant's Back Mushroom	perenniporia fraxinea	Chicken of the woods - sulphur shelf