Scented Pinecones Rinse pinecones under running water, lay pinecones on an old cookie sheet and bake at 200F until the pinecones open up (kills bugs, melts sap etc) spread pinecones out on layers of newspaper. Use a foam brush to apply glue. Mix cinnamon, ginger and nutmeg in baggie. Add pinecones in spice mix. Shake to cover. Allow to dry overnight. Use scented pine cones in gift baskets, on wreaths or placed in bowls. Hang them from your door handles or from your Christmas tree.