Look for sick trees. Elm trees are commonly afflicted with Dutch elm disease. As its name implies, the disease only affects elm trees, so if you see a tree with the symptoms of Dutch elm disease, you can safely conclude it is an elm.
1 The cost of repairing a fence is going to depend on the fence height, length, the materials, complexity of the installation, and type of repairs that need to be performed. 2  To give you an idea on what you are probably going to have to pay, plan on spending anywhere from $8 to $18 per linear foot for wood fence repair.
Posts of weather-resistant wood (cedar, redwood or pressure-treated pine) cost $2-$40 each depending on type of wood, length, width and quantity purchased. For example, Cobb Lumber in Texas sells a 2'x6.5' post for $3.71 and a 7x10' corner post for $27.25. Vinyl fence posts typically cost $10-$50 or more each.