chicagoland grows® Plant Introduction Program

Commendation™ Elm

Ulmus ‘Morton Stalwart’



Commendation™ elm was selected for its rapid growth, robust size, cold tolerance, broad adaptability, and excellent resistance to Dutch elm disease. This tree with its symmetrical arching branches develops an attractive upright to oval habit over time. The large, dark green leaves turn yellow in autumn. It is moderately susceptible to insect problems—notably elm leaf beetle, Japanese beetle, and gypsy moth. Commendation™ resulted from a controlled cross conducted by Dr. George Ware at The Morton Arboretum using Accolade® elm (U. davidiana var. japonica) as the female parent and a hybrid elm (U. pumila × U. minor) wild-collected in Russia as the male parent. Mature size: 50 – 60’ H, 40 – 50’ W.

 Click here to download a comprehensive Elm Bulletin PDF

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