I have all three of the Hungarian cherries. It seems like they take a long time to come into production. I planted Jubileum and Danube in 2009 and this is the first year Jubileum really produced well. Danube was still very light production but it’s a smaller tree. Even Jubileum didn’t produce like a montmorency cherry, but there were a lot of cherries on the Jubileum.
Production apparently is a problem on these varieties
Still there is a lot to like about them. They don’t have the pick damage of montmorency and don’t brown from the pick damage where the stem was. Plus they are bigger. And of course they are sweeter. I actually ordered another 20 Danube for next spring.
They are easier to raise than peaches because they don’t take much labor. Very little pruning and no thinning, although they do sucker profusely on Mahaleb.
The new bush cherries are faster and more productive and may put in bush cherries at some point.
I totally agree about removing non-productive trees. Like Scott and Fruitnut, I’ve removed loads of trees and have about 35 peach trees slated for removal this year. So far I’ve only regretted pulling out one tree. I should have given that tree more time.
I’ve pulled trees out in the past, but a mature tree leaves such a big hole, I’ve started just cutting them down and planting next to the stump. This may cause replant issues for me. I haven’t had enough experience in doing this to form any observations yet.