Hi, There is a lot of different advice here, all good but they vary from post to post. I will tell you what I did w/my PL. I'm no expert but I have a very happy healthy plant and it is huge, thanks in part to advice I got from this forum. Since you mentioned you got it when it was in poor health, I would assume the damage was probably done when you got it, it just died a somewhat slow death until now. I take my plant to the bathtub and give it a drink using a 3 gallon bucket, let it drain and repeat this three times (keep in mind, my plant is 4' tall and 4' wide, I don't think you will need to do this)But you should give it a good drink and let the water drain completely before setting it in its place. One thing PL don't like is wet feet. So never let the drain saucer hold water. It causes the roots to rot, when that happens they are almost surely a goner. I water when the leaves begin to be less erect, not witled or droopy. This too, over time will cause damage. It will recover in that the leaves will stand back up after watering,but after too much of this they will slowly die. I have mine in front of a west facing window, where it get 3-4 hours of direct sunlight. Some say, and it is believed that PL don't like direct sunlight, I have good luck w/mine where it sets. As a matter of fact I have moved it and it let me know it wasn't happy. I use VF-11 everytime I water it. It currently has 10 flowers on it and three more forming. I've read they don't like tap water, so I tried using stale water, that didn't matter at all. I saw no change in the plant. I went thru a trial period w/mine and tried all the different things I read about and this is what works best for mine. Mine had brown crisp leaves which I thought was an over water issue so I quit taking it to the tub, the problem got worse, so I went back to the tub method and sat it in front of the window, ever since it has been very happy. If you are unable to save the plant, you can use this advice if you should want to try a healthy one form the start. I have had mine for 4 years, it came from my grandmas funeral so I am determined to keep it alive. Heres a pic of it before all the flowers opened.

Sounds like an urban nightmare. What can you do?? First I would look for 2 or 3 trees of the variety you like best, 3 year old trees; and plant them in a part of the garden where you are in control. In a couple of years the new trees will begin to produce; and when they are big enough, you can let go of the older trees. Second, I would definitely prune back any limbs touching the new fence; after that you can reduce the height and let in more light at the same time using a method called "drop crotch pruning"... you can google that and easily learn how to do it. Personally, for oranges and grapefruits of that size, I would not lower the height by more than maybe 5-7 feet. You can repeat the procedure in subsequent years, if you wish more change. Next, give your trees a big shot of a good citrus fertilizer applied at the drip line/fence line and watered in deeply. Lastly, being in Florida, I would treat your trees with imidacloprid foliar application and/or soil drench 3 times per year; ask your local nurseryman or home supply store for the best product to use. Imidacloprid is a systemic insecticide that is also topically active; but enters the plant tissues, killing any insect that sucks on or chews the leaves, without killing the beneficials. Unfortunately, it will not affect your seemingly obnoxious or uncaring neighbor.

You should go to the building department after you talk to a qualified licensed landscape contractor he could give you some specific violations if any and suggest solutions like some fast-growing bamboo or something to block the lights. The cost of growth sometimes is painful, try and embrace it maybe the new owner will want to share in the bounty of the citrus?, also they are entitled to do as they want on their property as you are. That rule is violating them by where your citrus trees were planted.

Stuart, interesting idea. I really don't know what the wood hardener would do in this situation. One problem that might happen is that because the trunk on the Adenium is still alive it remains moist underneath (remember wood hardener is for dead wood) this in time might cause the hardener to eventually become loose and fall off. But really I don't know. If you try it let us know what happens. I do, however agree with dirtygardener, the scars make it look like an ancient tree that has been through a lot of hard times but is still going strong.