I live in Alberta, Canada and have many trees at varying ages, seedlings to 25 years in age. I have noticed that my Siberian Larch that are about 4

Years old have shot right up in height and have then flopped over back onto themselves and some of them have grown taller but have a large mid section where there are no branches coming out from the stem. They have lots of branches and healthy looking needles at the bottom and then a long stem void of branches and then healthy looking needles on branches at the top that flopp down. I put grass mulch around my trees and wonder if this could be promoting a mould or fungus. I have other, older larch that are magnificent and some that just wont seem to grow up taller but just remain a short little mass of needles and no branches.

I also have some established spruce trees that are loosing their needles from the stem toward the tip on the lower branches, and some that are loosing their needles from the new tip growth back toward the stem. these spruce are 15 - 20 feet tall.

I hope you can help because I devote a great deal of time and energy into our yard (farm site) and it is so discouraging to see trees ailing. Thank you, SG