The spots resemble those caused by the brown spot fungus, but as.
Apr 27, Why Are Pecans Falling off the Tree Green? In most cases, pecan trees drop their nuts in the fall when they are fully ripe and ready to be harvested. The husk will start to split and the nutshell beneath the husk will turn brown. When fallen pecans are green, this means something has interfered with the ripening process. Possible reasons. Pecans are fully developed by late Fall, just in time for cooler weather. Typically our pecan tree leaves turn brown and fall off, occasionally we have a fall where the leaves turn the pretty yellow-gold.
As you can see from the images below, leaves changing in South Georgia can be downright beautiful!
Take care during transplanting not to wound the roots and trunks.
The Future of Pecan Trees in Georgia. A native pecan tree typically grows from a nut that falls from a tree and begins to grow without any human intervention. Native pecan trees in stands are called pecan groves. Seedling pecan trees result when a female flower on a known tree is fertilized by pollen from an unknown tree to produce a nut that then germinates.
Oct 22, Zonate leaf spot, caused by the fungus Cristulariella moricola, causes severe defoliation of pecan trees during July and August of rainy summers. Leaf spots on the upper surface of pecan leaves are grayish brown, with concentric ring formations that are more distinct on the lower side of the leaf.
Jul 31, Pecan nut drop (I'm assuming you are talking about pecans as you are in Mobile, Alabama) is also caused by weather. Very wet seasons in the late spring and early summer can cause part of a pecan tree's crop to fall. The same happens if the trees experience hot extremely dry weather, particularly in sandy soils which dry out quickly.
Oct 08, Pecans are a large nut and need plenty of water to fill out the nut meat. If water is short in late spring and early summer, the nuts won't be able to finish development, and small fruits fall off.