I spent an hour this Sunday April 27th walking around campus and collecting phenological data on five specific trees around campus. The first tree I visited was the Red Oak off main street, tagged 615, the buds had just begun to burst out of their protective shell, just beginning to change for spring.
The second tree i visited was a sugar maple in front of the Davis center, tagged 618, the buds had completely burst open with flowers out and hanging prominently, with leaf buds poking but not breaking.
Next I examined the White oak behind Aiken center tagged 761, this tree is still in its dormancy stage, with no bud breakage.
The Red maple tagged 280 in front of Stafford hall had full flowers out, with the beginnings of leaf bud breaking.
The Norway maple, tagged 3262, off the corner of billings had full flowers out with leaf buds beginning to break. Looking on the NPN website I learned more about the total day-temperature ratio and how it affects different families of trees.
