… mountain ash ( Sorbus alnifolia ) has a broad, rounded shape, and can attain heights of 35 to 50 feet. This tree is a great specimen plant for the home landscape. A member of the rose family, this small, … handsome red fruit and great color in fall, and nice gray bark for winter interest. It's the best mountain ash for Illinois. …
Type: Garden Guide Plant
… Fall bloomers are already stealing the show and, while they are colorful, it is largely due to their size. By the time many of these perennials bloom, they are so tall that they often need … as big, this cultivar begins flowering in midsummer and doesn’t quit until it has fought its way through multiple frosts. Helenium s are plants perfect for rain gardens or any moist, sunny … species that naturally occurs in Oklahoma and Arkansas. Allan Armitage, Ph.D., selected the best form of this species from his trials and called it ‘Iron Butterfly’. The foliage and form …
Type: Blog
… ball shaped flowers are tucked in among the deep green very shiny leaves on this large shrub to small sized tree. The fragrance extends well beyond the plant encouraging gardeners and visitors to search for the relatively small flowers. Grow in bright light, warm temperatures, high humidity and moisture retentive soils for best results. …
Type: Garden Guide Plant
… surface of the plant. Tree peonies are not really trees but woody shrubs that can reach up to 6 feet. They thrive in full sun to partial shade and moderate moisture conditions. Free of most insect and diseases, it flowers best in full-sun conditions. …
Type: Garden Guide Plant
… native range, landscape uses, and other noteworthy facts. Participants will learn how to best incorporate native trees and their cultivars into landscape designs and the ecological services provided by these important species. The class is divided into approximately half lecture and half field work touring through the Garden’s …
Type: Item Detail
… This snakeroot has 3- to 5-inch-long leaves that are sharply toothed on the margins. Best of all, they are a subtle … shade, making it indispensable in the woodland garden with its bright white flowers. It is also attractive as a focal point in the perennial border. A uniquely colored plant for shade …
Type: Garden Guide Plant
… produces long-stemmed dark purple flowers from midsummer through the first hard frost. Unique to this cultivar are the slightly pointed tips of the flower petals. Introduced in 2010 by Swan Island Dahlias, it flowers best in full sun and well-drained, moisture-retentive soil. This dahlia is insect and disease free. Plant tubers or potted plants outdoors after the danger of late …
Type: Garden Guide Plant
… lily’s botanical name comes from the Greek words eremos—solitary and oura—tail, a reference to the plant’s spectacular flower spike which towers above its long, narrow foliage. The roots … dormant by midsummer. Grow foxtail lily in full sun and protect it from strong winds. It is very cold hardy and flowers best when grown in cold climates. …
Type: Garden Guide Plant
… 'Alba Suavelens' is an antique climbing rose that was already well established in European gardens by 1750. Its … have the fragrance old-fashioned roses are prized for. There's no repeat bloom, so no need to deadhead, with the result you'll get you'll get bright red rose hips come fall. It's self-supporting, disease-resistant, and best of all, tolerates some shade. In other words, this rose doesn't demand much of the gardener. …
Type: Garden Guide Plant
… 'Baron Girod de l'Ain' is an heirloom rose, first discovered in 1897 as a naturally occuring hybrid of another heirloom, 'Eugene Furst.' The very double, fragrant flowers are red, blending to deep pink, each petal delicately outlined with a fine line of white that accents its ruffled … so a regular protection program against black spot and mildew may be needed. For best bloom, give it full sun and fertilize in spring and again mid-summer. …
Type: Garden Guide Plant
