sweet cherry tree
many years ago I planted a sweet cherry tree. It looked like it died then it came back the following year and grew into two trees. The tree only produced four cherries years ago. My question is will this tree ever produce fruit again? Is there anything I can do to help it along? My peach tree produced fruit last year but they were small. Do I have to spray the tree to make larger fruit? My blueberry bushes are years old. I got them at lowes. Will they ever get over 20 inches tall? Last year I read that epsom salt was good for them. I put some in the ground around the bush of 3 plants. This year they do not look well. What can I do? Sorry for so many questions.
Frederick County Maryland
In general cherry trees are not long lived trees and they can have many problems. They can be susceptible to diseases including foliar and cankers; insect and mite pests; and abiotic problems (not insect and issues). Fruit trees eventually require a spray schedule for control. Some sweet cherries need a pollinizer tree from another variety to set fruit, poor pollination, low light , winter kill of buds, etc. We cannot say why your tree is not producing and it may be beyond its life cycle. Here is our web page on stone fruits, care, and problems. You can send us photos of your tree and give us more information. https://extension.umd.edu/hgic/topics/stone-fruit-peaches-cherries-plums-apricots-nectarines
Peaches - You did not mention how old the tree is. A reason for small fruit may be failure to thin or prune properly and low fertility. See more on thinning the fruits and care, training, pruning, etc. https://extension.umd.edu/hgic/topics/fruit-trees-fruit-thinning
Also, Stone fruits are subject to a wide variety of insects and disease issues and eventually requires a spray program for control. You will have to familiarize yourself with and manage or prevent problems. Peaches are very susceptible to brown rot, a fungal disease. A protective fungicide barrier is critical from prebloom through preharvest. You will have to look for this. https://extension.umd.edu/hgic/topics/diseases-stone-fruit
Blueberries - You can send us photos of the blueberries. You did not mention how old they are. We cannot say for sure why the blueberries have not grown. Might be due to poor establishment. Did you test the soil in the new location before you planted? Did you amend the soil to a pH of between 4.3 - 5.3? Blueberries need acidic soil and high organic matter to grow well. They also do well with a layer of mulch to help retain soil moisture.
They are devoid of root hairs so this makes the blueberry plant very sensitive to changing soil/water conditions. Mulch and irrigation are essential. They need about an inch of water per week during dry periods. Pine bark mulch, rotted sawdust, and compost are good mulches. Apply them to a depth of 2 - 3 inches and replenish whenever necessary. Avoid mulch with high pH, such as mushroom compost. See our page on blueberries for care and fertilization. No epsom salt is recommended. Look for ammonium sulfate and Avoid fertilizers with nitrates or chlorides. https://extension.umd.edu/hgic/topics/blueberry-care