Develops a crooked, round-toped, very spreading crown with maturity. Leaves are sharply toothed. Recommended, but rather hard to find commercially. Should be used more often. 55 x 35 Hardy Zone 3.
Shape is similar to American elm when mature.
Tends to grow many suckers when young, forming dense thickets. A borer kills most trees while they are still quite small, but large, mature trees are occasionally found on drier sites. Not often found in nurseries because of the borer problem. Has small, vicious, paired thorns at the nodes of the twigs. Develops an irregular, open head, frequently with multiple, clustered trunks.