Are blueberry, pear, or rosemary flowers safe to feed my glider?

Also would pear wood be safe for her to chew on?

My boyfriend's parents have a tree that needs trimming and I'd love to give her a branch of I can.

If it is really pear (and not chinese pear), then the wood is safe, at the condition that the tree hasn't been treated with chemicals.

As for the flowers, for pears, only the petals are safe, and I have no clue for blueberry and rosemary