Answer:
Tiny creatures that have a special relationship with flowers.
What goes zub zub zub
A darkΒ-colored creature serenaded by Lennon and McCartney.
A nutcracker up in a tree
What has a coat? Hugs you not in sympathy? Whose smile you'd rather not see? Whose stance is a terrible thing to see? Who is it that brave men run away from? Whose fingers are clawed? Whose sleep lasts for months? And who's company we shunt?
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.