After leaf-out, it would plunge (because the tree has used a lot of stored food energy to put on new leaves).
(it; would plunge; because the tree has used a lot of stored food energy; T:After leaf-out) (the tree; has used; a lot of stored food energy)
it the tree
would plunge has used
because the tree has used a lot of stored food energy T:After leaf-out
a lot of stored food energy