Plant advice from The Morton Arboretum: This dainty perennial earns its name from the delicate clusters of white flowers that rise above the almost maple-like foliage. This is a good plant for shady gardens.
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.
Higan cherry is a small- to medium-sized tree known for its early pink to white flowers in spring. The weeping form is most popular in the nursery trade.
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.
Plant advice from The Morton Arboretum: Hinoki-cypress has dark green needles on graceful spreading branches that droop at the ends and attractive red peeling bark. A number of dwarf and compact cultivars add accent to the garden.
Hybrid leatherleaf viburnum
Viburnum x rhytidophylloides
Plant advice from The Morton Arboretum: This plant is a large shrub that makes a good screen. Does not always fruit well unless another viburnum is close by to serve as a pollinator. This hybrid results from a cross between Wayfaringtree and leatherleaf viburnum.
Hamamelis x intermedia
Plant advice from The Morton Arboretum: A number of hybrids have been bred between Chinese witch-hazel (Hamamelis mollis) and Japanese witch-hazel (Hamamelis japonica). These large shrubs have interesting confettilike flowers, usually in shades of yellow to red, in late winter or very early spring before the leaves appear.
Plant advice from The Morton Arboretum: Inkberry is a type of holly. The flowers are not showy, but the black fruits can be seen well into winter.
A dainty but tough understory tree with beautiful birch-like leaves, grayish-brown flaky bark, fine-textured drooping branches, and attractive hop-like fruits. Ironwood is considered one of Illinois' toughest native hardwoods and is not only ornamental but resistant to many disease and insect problems. Excellent tree for naturalized landscapes.
Jack pine is very hardy and well suited to northern climates. It can be used in windbreaks, although it is susceptible to ice storm damage and may be difficult to find in nurseries.