There is an equally general way for knowing which group an oak.
The acorn remains as a small immature acorn for most of the summer months. If extreme dry hot conditions persist over the summer these embryonic acorns may abort causing the loss of that years crop. About late summer/ mid August the acorn begins to rapidly enlarge to reach its maximum size in just a few short weeks. There is great variability in size and shape of white oak acorns between individual trees. Aug 03, Green acorns on an oak are a common sight in summer. Typically, acorns “fall” around fall- in boom and bust cycles - to help plant new trees and to provide a nutritious food source for a number of critters.
But when the acorns are green and dropping early, it indicates the tree is under some kind of weather-related stumpchop.clubs: Jul 14, It is not normal for oak trees to drop immature acorns during the early to mid-summer. That is a sure sign of stress.
While putting out trail cameras last week, I notice three different oak trees aborting their acorns. Immature acorns were all over the ground and just raining out. Sometimes oaks shed acorns early that have been parasitized by insects. I don't see any obvious damage such as weevil holes, but wasp parasitization from earlier in acorn development might not be that obvious. It's not terribly early; full acorn drop normally commences around Oct. 10th.
The acorns have a strange appearance too.
Oct 15, What are the pellets falling from oak trees? # Asked October 15,PM EDT. Can you tell me what the tiny, beige-to-green dots are under the oak leaves this time of year?
My yard has mostly white oaks and my roof and sidewalks are covered with these poppy-seed-sized pellets that are dropping off the underside of the leaves. The.