Rock Elm (Ulmus Thomasii) is a perennial tree in the Ulmaceae family with moderate care difficulty. It requires moderate watering and full sun or partial shade light in USDA hardiness zones 2-7. This plant is safe for cats and dogs.

Ulmus thomasii, commonly known as Rock Elm or Cork Elm, is a medium to large deciduous tree native to the Midwestern United States and parts of Canada.