scotch pine bark falling off
I have 3 about 50 year old scotch pines in my back yard in full sun - I noticed the bark has been peeling (falling off) this year (it n=may have started before i noted it) - the loss of bark is from the top of the trees down to about roof level -- 15 ' off the ground- I am not sure of the progression ie if it started from the top down or happened all at once
3 pictures show the transition zone and tree. there is grass lawn which gets watered on the south side of the tress (and house)
Arapahoe County Colorado
This color, flaking and appearance of older Scotch pine bark is normal.
Here is bark description from Dr. Michael Dirr in Manual of Woody Landscape Plants: "On the upper portion of the stems orangish to orangish brown, thin, smooth, peeling off in papery flakes, thicker towards the base, grayish or reddish brown, fissured into irregular, longitudinal, scaly plates"