nut hulls and there caseings

Asked September 17, 2018, 8:14 PM EDT

My father has many walnut trees, Old English, Black and a Giant I am not sure of the title; All have black seemingly rotten casings. Some are young trees only 5 years old and they are still dropping black mushy cased hulls? The hulls seem strong but the casing is almost always dark mush on all trees! Is this a soil problem or atmosphere? We are located near I-5 Thank you so much for your time.

Cowlitz County Washington tree health nuts walnut trees

1 Response

Hello, That is completely normal. As the walnuts finish, the flesh between the out husk and the nut casing turns black. In fact, the black flesh was used as a fabric stain. Be careful when handling, it will stain your hands and clothes.