I am concerned that Arsenic may find its way into the fruit of pear trees grown on a free standing espalier supported by H4 treated pine posts which will be concreted into the soil.
Here's a link Penn State's update on using treated wood: https://extension.psu.edu/environmental-soil-issues-garden-use-of-treated-lumber Here's a link to our article about it - hope this helps: https://www.gardeningknowhow.com/garden-how-to/info/treated-wood-for-gardening.htm
The leaves have bumpy black spots and the pears are severely stunted and falling off. Can anyone tell me what is infecting my pear tree?
This is pear scab, which is very difficult to control. Here is an article that will help:
https://www.gardeningknowhow.com/edible/fruits/pear/how-to-treat-pear-scab.htm
My orchard is pruned annually in winter and this year a more aggressive pruning was employed. In the past, there has always been an excess of watershoots every summer (my trees look like a Phyllis Diller bad hair day))and I never seemed to get around to pruning them at that time; however, this year I made a concerted effort to prune the shoots in June and I pruned a pear tree twice in early June and early July. Now, by late July there is a plethora of regrowth in all my apple, pear, and plum trees that I am about to attack again. Is there never an end to this resurgence?
Unfortunately, no. There isn't going to be an end in sight. Annual control will be necessary.
Heavier prunings will, often, cause waterspouts to show up more vigorously. This is, especially, true in older trees.
Most fruit trees have a producing lifespan of 15 to 25 years, with some specimens producing for far longer. If the trees are nearing that age, it may be necessary to look into replacing them with younger specimens.
Here is an article that will help:
I have a dwarf Asian Pear tree (about 7 feet tall). Some of my pears have a black spot on them. What causes the spots and is it ok to eat the Pears?
Unfortunately, your photo did not come through. It sounds a bit like Black Rot. This article will help:
https://www.gardeningknowhow.com/edible/fruits/pear/pear-black-rot-information.htm
I have several trees in my orchard that are now 12 years old. The tree is growing great, but the only fruit is ever gets is a small round green bulb about the size of a cherry. There are lots of them on the trees, but nothing edible. The trees get full sun, plenty of water, I fertilize every year, but no fruit. The trees were marked Seckle Pear when I bought them, but I am not sure that is what they are. Should have had some fruit by now.
Unfortunately, your photos did not come through. From the sound of it, though, fertilizer ratios may be off.
Lack of fruit will happen when there is too much nitrogen, and not enough phosphorus and potassium in the soil. Make sure to test the soil before feeding so that you know what, and how much, to add.
Here are some articles that will help:
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-soil.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/soil-ph-plants.htm
https://www.gardeningknowhow.com/edible/fruits/pear/growing-pear-trees.htm
https://www.gardeningknowhow.com/edible/fruits/pear/fertilizing-a-pear-tree.htm
https://www.gardeningknowhow.com/edible/fruits/pear/pear-tree-pruning.htm
I have a pear tree in my garden which has some sort of disease on its leaves and it's never had it before it's neared a good crop of pears but don't know if there safe too eat cause of the disease in the leaves
The pears will be fine, as these are insect eggs. They can be gotten rid of, fairly, easily. Here is an article that will help:
https://www.gardeningknowhow.com/edible/fruits/pear/leaf-curl-on-pear-trees.htm
I have 2 trees one unaffected another close by has inedible fruit.
It could be stony pit virus, which is transmitted during grafting. Replacement is recommended.
https://www.gardeningknowhow.com/edible/fruits/pear/pear-stony-pit-virus.htm
https://www.gardeningknowhow.com/edible/fruits/pear/growing-pear-trees.htm