It’s 6:1 for pollination. Next row keep it simple for harvesting like you’ve done and plant Hark. I would be thinking hickory & hican too. The cultivars that crack incredible with a Mr. Hickory cracker are.
A must have is Selbhers. It cracks just fine and is the sweetest hickory you’ll ever eat.
If you cannot get a Mr. Hickory (Fred Blankenship supposedly is starting back up in business but there’s an enormous waiting list:) call Fred on his mobile: 270-272-7670 - then Fred says that a cracker he paid 68$ for from White Oak Nursery (probably plus shipping) cracks better than the Master Cracker. That’s a tall order. Fred says, “call and ask for Omar.”
Now I’m not doing a sales pitch but I graft all this stuff and currently sell on eBay as: conifers825
If you get on my follower list, I’ll be putting this winters/springs grafts up for sale next Fall with a newletter in advance allowing people to know when to begin looking.
I do Hark, Kanza. Several/most of those hickories and hicans… but in limited #'s for some cultivars. I should have a whopping amount of Carya grafts for sale. ( @joleneakamama ) b. walnuts, Persian walnuts, heartnuts, pecans, hickories, hicans, persimmons, pawpaws, and pears. No APPLES!