Possible Clues:

• Bows are made from their boughs
• Evergreens with red berries
• Longbow trees
• Trees with poisonous leaves and seeds
• Evergreens with supple wood
• Trees that yield bow wood
• Evergreens used in bowmaking
• Reporter’s to employ these in graveyard traditionally
• Homophone of 'use'
• They’re common in British churchyards