This is Corylus avellana Contorta, also known as Harry Lauders walking stick, European filbert, European hazel, and cobnut. This plant likes to live in full sun where it will blossom from early Spring until late Summer. The nuts can be eaten raw or roasted and are used extensively in baking and salad dressing. This is a larval host plant for the Walnut sphinx moth. USDA Hardiness Zones 3 to 9