Hello John

It is a pretty poem that anticipates spring. I like the rhyming scheme and the rhythm as well.

Content-
The title says it in a befitting metaphor. It is still asleep, the season is yet to make the clarion call. It is some more time before it uncoils itself from the slumberous slopes of winter.
"Predicting release
from a hard winter grip;"
The metaphor reminds me of a snake that sleeps, a coiled serpent. once it stirs and raises its hood, the whole land is awake, takes notice of it and is overwhelmed by its charm. Could spring be something like that? I wonder.

Form-
Short, rhyming stanzas with well constructed figures and apt word choices impress me with a spontaneous flow.
The maple tree stands out against the white winter sky. Visual image.

It flows well.

Write on!