I have 5 problematic linden trees that were installed 4 years ago (balled & burlapped). They are currently about 20-25 feet tall. After the second winter approximately half of each tree died. A couple are literally dead on one side and others are dead on the top half of the tree. One of the trees is mostly dead with only a few branches still alive. The trees do seem to be growing new small branches on the first 5-6 feet of the trunk. Just for more info, I have 6 linden trees that are planted in the weeds (tall grass) just outside of the sodded area in my yard and I have one tree in the sodded area. The tree in the sodded area is very healthy, and one tree in the weeds is ok. The other 5 in the weeds are the problematic trees. They all have mulch around them. What would you recommend I do with these trees? They look ugly so I am tempted to cut them down but would like to save them if I can. Any recommendations would be appreciated.