I have a black walnut tree right in front of my house. When the house was built, this was the lone tree in the field. I insisted that it not be cut down as it provided the only shade we had. This is the last tree to get leaves in the spring and the first to lose it's leaves in the late summer. It does provide some nice shade in the summer, but right now it is providing me with an excess of black walnuts.
I went out this afternoon and picked up eight buckets full. They were falling almost as fast as I was picking them up. It's a dangerous chore - if you are hit on the head by one of these large, hard nuts, it can cause quite a bump. They have to be picked up before I can cut grass, since they can damage the blades of the lawn tractor.
They can be eaten if you want to go to the trouble of going through the outside hull and the inside hull to get to the nut. I'm not a big fan of black walnuts, so I toss them in the gully where I throw sticks and limbs from the yard. I used to think maybe the squirrels would get them since there is a squirrel's nest in the tree above the tossed pile. Even the squirrels must not think they are worth the trouble, since they've never eaten any.
The tree is close to the house, so walnuts will fall on the roof. Sometimes when a bunch fall at once, it sounds like someone is beating on the house. I've even thought someone was knocking on the door and discovered it was only falling walnuts. Once they all fall, hubbie will need to go on the roof and clean them out of the gutters.
To amuse myself while picking up walnuts, I count them. (OK, so I'm weird.) This afternoon I picked up 867 to make a total of 2054 for this year. The tree has at least that many more still to fall. Looks like I'll be gathering nuts for awhile yet.