It always amazes me how blue they are, especially in the summer.
I took this pic on the southern end of the Blue Ridge Parkway on Saturday. So according to some articles I read, the blue is caused by trees generating isoprene, which gives protection from summer heat and stress (especially Oaks).
I took this pic on the southern end of the Blue Ridge Parkway on Saturday. So according to some articles I read, the blue is caused by trees generating isoprene, which gives protection from summer heat and stress (especially Oaks).