Amur maackia is a compact, rounded tree for smaller landscapes. The compound leaves emerge silvery-green in spring changing to medium green in summer. White, spiky flowers appear in mid-summer when little else is flowering and showy, mottled olive-green bark adds to winter interest.
Amur maple has invasive traits that enable it to spread aggressively. This tree is under observation and may be listed on official invasive species lists in the near future. Review of risks should be undertaken before selecting this tree for planting sites.
This unusual plant is hard to define. It grows tall enough in the wild to be a tree, but is often a large shrub in landscapes. Large clusters of tiny white flowers appear in late summer followed by small, black fruit. Stems are thorny. Angelica tree has become invasive in a few areas.
Anglo-Japanese yew is a very popular hybrid between English and Japanese yew species often used as hedges, specimens and foundation plants. Hardy and resilient, yews are very tolerant of urban conditions and are one of the few evergreens that tolerate heavy shade.
Apple serviceberry is a wonderful four-season tree with white flowers in the spring, blue-green leaves that turn red in the fall, blue-black edible berries, and smooth silver-gray bark. Excellent for a woodland garden, naturalized setting, or as a specimen plant in a garden. This tree is a hybrid of two native species of serviceberry.
Atlantic white-cedar is an attractive plant, but is not commonly found in landscapes. It may be difficult to find in nurseries as well. This tree requires moist to wet sites and is very intolerant of drought.
Autumn moor grass is a cool-season, clumping grass, with foliage that is semi-evergreen to evergreen (depending on climate). Flowers are less showy than many other grasses but the plants are durable and can tolerate light shade.
A hardy series of azalea hybrids (Rhododendron) developed for bud hardiness in Minnesota to withstand cold temperatures as low as -35° F without significant damage. Azaleas are deciduous, drop their leaves in fall, and have 5 stamens in each flower. Should be sited in protective area in a well-drained soil. Numerous colors are available.