Pine needle drop
Pines, like any other tree, discard their old needles during the autumn. The difference between these “evergreens” and deciduous trees is that not all of the needles drop off; otherwise the tree would perish. To confuse things slightly there are “deciduous” needle-bearing trees like the larch also known as a tamarack and the bald cypress that drop all of their needles during the autumn.
Nature Note for 12/7/14