Plants usually need an adjustment period after repots if root work was extensive. When potting up, usually there is little noticeable difference, just a temporary increase in vitality. Repot/root-pruning will cause the tree to sulk for awhile & the time period varies. (BTW, Acers tolerate total bare-rooting very well, so don't be reluctant to remove all the old soil from the root mass). Also, timing of the repot impacts recovery. Visible signs are temporary slowed or nonexistent growth, temporary loss of vitality, possible loss of some buds. I would tend to consider leaf burn a result of a root system that is yet unable to keep up with water demand put on the tree by other cultural conditions (wind, sun, high temps), or fertilizer salt issues. Also, cellular pH has the ultimate affect on color, but soil pH affects cellular pH to a certain degree. Couldn't guess at soil pH unless we know soil make-up. Do you know? I can tell you how to test container media pH if you wish to know & don't, but it will vary widely over time. If I remember, we had some off forum discussions about soils for your Acers? Are you the one that linked me to another forum site discussion about Acer nutrient preferences? If so, I was impressed by the knowledge of the posters. I have always found that the fast soils I grow in require more N than I would at first think. However, I also know that generous applications of N in containerized Acers can bring about some unwanted problems. If you still have access to the folks you were talking to previously, I would seek nutritional advice from them. That works for me doesn't mean it will work for you. Are you the one who spoke of adding some extremely large pine bark to the mix? Is it possible the soil is simply becoming to dry between irrigating? What else is in the soil aside from the bark? Pam comes here often - also grows lots of Acers in containers. Perhaps she will read & offer her advice, which is always sterling. I'm at work now, but I'll link her to this tonight. Al

simple answer. NO. 120 degrees is harmless to seedlings so long as they have plenty of water. I routinely let my greenhouse get up to 120 degrees in early spring to encourage rapid growth. It also helps out with ensuring the plants can survive when planted outside in the garden. DarJones

It's always best if you show overall pictures so we can get a feel for what's happening. Words have a way of leaving a lot of mysteries unanswered. In spite of not knowing, I'm speculating based on what it sounds like. It sounds like they (you, if you allow it) may be creating an erosion problem. If their new fence base is catching water and redirecting it, even though it will end up in the same place, along the way it will develop into a stream and could erode soil on your side of the wall. The stream would be forced to run along the wall because it's along the lower side of your lot. It protects the neighbor from washing, but adds to washing on your side. I did not follow your other thread but it's likely that this project is a violation of drainage code. Why are the neighbors doing it? If it's to protect their property from runoff, they're in a sense thumbing their nose at your situation in deference to making sure they come out on top. General rules of drainage are that people cannot concentrate water flows onto someone else's property, nor can they block the natural flow of water from coming onto their property. If either of these rules were ignored, instead of the world operating smoothly, there would be colossal problems every time it rained. Your husband wanting to let it go is his not understanding the degree to which this might come back to haunt him (unless you are the one buying and hauling soil to fill in the washed out areas when they occur ... thus it being no skin off of his nose!) Of course, we can't be sure if it will be severe, or how severe, because we can't yet see it so as to make our educated guesses. My suggestion would be to get on top of this ASAP. If it is going to be a problem, you would not want to stand idly by and watch it being created, just to be nice ... so that you can be miserable tomorrow. If it truly is going to cause a problem, it would also be much less neighborly of you to allow it to happen, discover the reality of it and then demand that the neighbors correct and remove it, after they've put all the money and effort into it. Then there really would be hard feelings. It would be infinitely better to put an immediate stop to it. All of this depends on that little word: "if." Show pictures in line with the wall/fence and pictures across the grade, perpendicular, looking at it.

Without photos that clearly illustrate the problems, it is impossible to say.