Celtis laevigata Sugar hackberryCulture: This flood-plain species tolerates wet to dry soils and acidic to alkaline soils. It is resistant to witches' broom. It also has fewer problems with leaf nipple galls than Celtis occidentalis. In the Midwest, trees are usually free from nipple gall, however the author has observed heavy infestations on trees at the Montreal Botanic Garden and occasional infestations on the University of Illinois. Usage: This species is widely used as a street and shade tree, especially in the southern United States. In the Midwest, its lack of cold hardiness restricts its usage. The selection 'All Seasons' from Bill Wandell is cold hardy to USDA zone 5a/5b. |