Q.Our 5 Buckeye Trees Had A Lot Of Flowers This Past Spring But No Buckeye Pods Produced – What Are The Possible Reasons?
In August I noticed a few pods on the ground that had been opened and partially eaten probably by squirrels – the buckeye pods usually drop around the end of September to early October
Certified GKH Gardening Expert
This can happen for a few reasons. Usually, this is due to weather stress. Typically if the weather is too dry, or too wet then it will have an effect on the tree's ability to bear fruit.
Another possibility is that the trees are too young to fruit reliably. Until it is of proper age, or if they were planted within the last couple of years, then it may not fruit reliably for several years.
Here is an article to help with the care of the trees: