Rare Nut CollectionDescription Specification Gift wrap We have carefully curated a collection of our ornamental trees that produce edible nuts. The Rare Nut Collection contains one of each plant in either an 8cm or 9cm pot. Bitternut Hickory Carya cordiformis (10cm tall): A slow growing, deciduous tree with scaly, thin brown bark and leaves that have seven lanceolate leaflets. The tree is native to North America. The male flowers are tiny and formed in dropping clusters