Hardy rubber-tree, a native of China, can be used in the landscape as a shade tree. It has an attractive round to broad-spreading form, but little else in the way of ornamental interest. During summer, the thick leaves are a very glossy green.
Hedge cotoneaster is an upright shrub with spreading branches reaching 8 to 10 foot high. Attractive dark green foliage turns a yellow to red in the fall. Makes an excellent screen or tall hedge. Attractive black fruit persist into winter.
Hedge maples have invasive traits that enable them to spread aggressively. While these trees have demonstrated invasive traits, there is insufficient supporting research to declare them so pervasive that they cannot be recommended for any planting sites. Review of risks should be undertaken before selecting these trees for planting sites.
Hesse cotoneaster is a hybrid between Cotoneaster horizontalis and Cotoneaster adpressus var. praecox. This low-growing cotoneaster was selected byThe Morton Arboretum and introduced through the Chicagoland Grows ™ introduction program. Hesse cotoneaster makes a wonderful ground cover, draped over a wall, or used in mass.
Hill's oak, a Chicago-region native, is very similar in appearance to pin oak, but has the advantage of tolerating a higher soil pH. This means that the chlorosis (yellowing) that is common in pin oak is not a problem for Hill's oak. Hill's oak can be used in parkways and has excellent fall color.