I am posting a photo of each of my five Chinese Chestnut trees that I planted in my back yard in late April of 2015. These photos were taken about 7 AM on July 20th. Three of my five trees have at least one bur and two of my five trees have no burs. Please notice how these five trees differ in the number of vertical stems they have.
Chinese Chestnuts are branchy trees while American Chestnuts are phone pole vertical. This spring I did prune some of the five but not all. Next spring I will prune some more.
Alpha is my favorite tree and it is in my avatar photo. It has about 18 or 19 burs currently and is extremely healthy and vigorous. Here it is:
Alpha has 18 to 19 burs - one bur can be called either a single or a double. I believe I will get viable chestnuts from this tree this fall.
Omega is planted right beside the Alpha tree. It has the tallest branch of the five and originally had 2 burs but we lost one early on in a harsh thunderstorm. So it has one bur on it now and this tree is about 21 to 22 feet from Alpha. Here is Omega:
Next spring I will prune some of the lower branches. This tree is loaded with big leaves - I wonder if that limited the bur development. In the left edge of the photo you can see the black shade cloth on my greenhouse. In the right side you can see the neighbors wood fence and one of my chestnuts trees on that side of the yard.
My middle tree next to the neighbor's wooden fence has 6 burs on it. I have three trees in a straight line - all 21 feet apart. Here is the middle tree:
I don't know if I will prune the two leaders on the left - will take my time making that call.
The 3 trees in this post have burs. The burs have gained size every week or two. I am very hopeful - reducing stress and good luck have been my secrets as well as full sunlight locations.
Thanks for viewing this thread.
Wayne