A zone 4a deciduous tree 20 to 30 ft tall that produces tasty edible nuts - about 5 years ago I was looking to purchase some nuts to roast at Christmas so I went to Real Canadian Superstore and found some that were actually starting to sprout in the bins.......I couldn't pass them up. But I must admit these flower spikes do have a bit of a funky odor to them.
I saw some sort of Castanea in bloom yesterday - it was spectacular. Nice that you had the room to take advantage of the sprouting seeds.
I ended up with two trees (both are flowering right now) so I'll let you know if I get anything off them.