The best wood for pizza ovens is hard, dry, aged wood such as oak, arbor, walnut, beech, apple, mesquite, maple fruitwood (peach, plum), avocado, olive, pecan, or eucalyptus. Avoid the use of resinous wood such as spruce or pine as they can be dangerous to your health.
Here's a super article on the best firewood for your pizza oven.
