We have a row of plum trees in our yard. They would produce the most delicious plums year after year. Then they just kind of stopped producing fruit. I did not know anything about them, so I called a tree service in Long Island to help us get them fruiting again. There was a lot of factors going into the trees not producing fruit any longer, and they were all pretty easy to correct. I originally thought they would just need to be cut down, or not expected to fruit anymore and just be left to do what trees do.
The tree service in Long Island told us that the taller maple trees were blocking too much sunlight, and the property of the soil was not conducive to fruiting trees. When my dad planted them years ago, he heavily amended the soil to make it what plum trees like to grow in. Now it was reverting back to the native soil we had in our yard. Amending it with fertilizers each year would help the plum trees to fruit, but pruning those elms was definitely necessary. Plus, they were growing to big to support their own canopies, and that presented a risk to our house, the cars in the driveway and anyone outside.
We already had a couple of bigger branches break, and I should have seen that as an indication that the trees were getting too big. I saw that the plum trees were in shade most of the day because of the bigger trees, but I did not know how much sun they needed. The pruning of the elm trees was successful. They looked a little funny the first year, but they filled out nicely the next growing season. Our plum trees produced fruit again too. It was nice to be able to enjoy fresh plums and plum pudding again.