in the game the throwing Deku NUTS stun, the deku seeds are good size for Slingshot ammo so he uses it.
Deku Seeds are items from The Legend of Zelda: Ocarina of Time. They serve as ammunition for the Fairy Slingshot. They are small, hard seeds. They can be bought in shops for a price, or in tall shoots of grass.
Deku nuts are the shriveled heads of Deku Babas. Once you kill one, it will dry up and leave a Deku nut in it's place. When thrown, they produce a bright flash of light, which stuns enemies temporarily. Deku Nuts could be found almost everywhere in grass or fields.
