How to Make a Pine Cone Garland-Bake - How to Make a Garland with Pinecones - Bob Vila
Pop in the Oven
Line a large pan or cookie sheet with foil and bake the pine cones at 200 degrees for 1 hour. This will kill any critters that might be living in them. Stay in the kitchen to watch for any sap flare-ups. If your cones close up due to excess moisture, you can set them out to air-dry until they open up again.