Yes! Daffodils are known for naturalizing in garden beds and lawns and will begin to multiply 2-3 years after initial planting. For them to naturalize, they need to be left alone to recharge the bulb until the leaves turn yellow. Consider this when planting your daffodil bulbs (ie, you may not be able to mow a lawn for a while if you place them in your grass). Any daffodil variety should naturalize, but some are better known for it, such as Narcissus ‘Actaea’ and Narcissus ‘Tete a Tete’.