What are the damages, if any, to ground cover under a weeping cherry tree? I have been told that ground becomes high in negative nutrients. Care to comment, please.
I believe you are referring to the chemical Juglone, which is given off by the roots of certain trees. Black Walnut is one of the worst alleopathy culprits.
Black Cherry Tree is listed as alleophatic, but you do not need to worry about a Weeping Cherry Tree.
Here are some articles with more information.
https://www.gardeningknowhow.com/ornamental/trees/weeping-cherry/weeping-cherry-growing-tips.htm
https://www.gardeningknowhow.com/garden-how-to/info/allelopathic-plants.htm
https://www.gardeningknowhow.com/garden-how-to/mulch/using-nut-hulls-as-mulch.htm
I have a 4 year old weeping willow that is growing healthy. However, it seems to have two large branches growing from one root. It looks like the root is going to grow two separate trunks.n I know that willows can grow quite large, so should I cut one of the branches? Will it affect the life or health of the one branch connected to the base of the tree?
Yes, you will want to have one central leader.
Pruning Willow needs to be done while the tree is dormant.
Here is an article that will help you.
https://www.gardeningknowhow.com/ornamental/trees/willow/how-to-prune-willow-trees.htm
I have a weeping willow bush and it needs to be pruned. What time of the year should I do this?
You can prune a weeping willow any time from spring though early fall.
What is causing my weeping willow tree to have branches that look like they are peeling and dying? The bark is peeling on the trunk and very thin branches this year. The tree is 9 years old. First noticed the trunk peeling then branches, also look brown and dead.
There could be a few reasons.
A tree that grows quickly can suffer damage to the bark.
Winter sun scald can happen and damage the bark.
Can be drought related, not enough water.
Inspect the tree carefully for any other signs of insect or disease.
It may be worth a call to your local county extension office to inquire if any other reports of Willow Tree issues in your area.
You may want to call a professional Arborist to insure the health of your tree if your unable to correct the issues.
https://www.gardeningknowhow.com/ornamental/trees/tgen/peeling-bark-on-trees.htm
We have some dead looking branches on the tree and the tree pruners have told me I need to do this now; however, I had the impression not to prune till winter. He also said that if he cuts a branch from one side of the tree, he needs to cut one from the other side. Is that true?
You are correct and pruning should be when the tree is dormant.
This article will help you.
https://www.gardeningknowhow.com/ornamental/trees/willow/how-to-prune-willow-trees.htm
I recently purchased a weeping willow online and it arrived in a dormant state. I haven't planted it in the ground because I don't know where it's going but they said to plant it immediately. How do I know if the tree is growing or did I do something to kill it? Please tell me what I should do?
Bare roots should be slightly moist when you receive them and planted out as soon as possible.
Here is a link that has growing information.
https://www.gardeningknowhow.com/ornamental/trees/willow/grow-a-willow-tree.htm
Planted new young weeping willow tree this spring, doing well. There is a large limb at the top that is larger at this point than the main stem I have chosen for the main. The limb competing with the main is longer and larger around than the main but hangs down. How do I resolve this problem and when?
Because weeping trees require specialized pruning, you may want to call a certified arborist to come have a look at your tree. I am not sure whether it is best to remove that branch or to stake it and treat it as the new main stem.