Q.Cherry tree dropping leaves
Newly planted cherry tree’s (4/5 weeks) leaves are turning brown & dropping. Similar tree planted at same time 4 M away appears healthy. Is this tree in trouble? Solution if any?
Make sure you have planted your tree in a full sun with well draining soil location.
Watering daily for the first 2 weeks then you can start to cut back.
Hardwood much can help with moisture retention.
Check the soil moisture levels.
These articles have more information.
https://www.gardeningknowhow.com/edible/fruits/cherry/cherry-tree-care.htm
https://www.gardeningknowhow.com/ornamental/trees/tgen/watering-newly-planted-tree.htm