… Wilson Compact blackhaw viburnum is a more compact cultivar than the species at a height of 15" and and a spread of 12'. Its white flowers in May are typical of the species. Viburnums are a versatile genus of multi-stemmed shrubs that are well suited to the home landscape due to their range of sizes and cultural adaptability. Some viburnums are …
Type: Garden Guide Plant
… The genus Quercus includes more than 600 species of the oak tree, of which 90 are native to North America; the Chicago Botanic Garden's collection contains more than 60 varieties and … that produce fruit we all know as acorns. Within the white oak group, acorns mature annually; in the red oak group, acorns take two years to mature (biennial). Oaks are often imposing shade …
Type: Garden Guide Plant
… The genus Quercus includes more than 600 species of the oak tree, of which 90 are native to North America; the Chicago Botanic Garden's collection contains more than 60 varieties and … that produce fruit we all know as acorns. Within the white oak group, acorns mature annually; in the red oak group, acorns take two years to mature (biennial). Oaks are often imposing shade …
Type: Garden Guide Plant
… There’s less mystery in the natural history of aquatic green algae and its relationship to land plants, thanks to research co-led by Chicago Botanic Garden scientist Norm Wickett , … but feel encouraged by the wave of enthusiasm around the release of the publication. “When you get involved in these kinds of projects, it never seems as big as it is—you just get used to the …
Type: Blog
… Northern wolfsbane is one the earliest of the Aconitums to bloom - perhaps an adaptation to the short growing season in Scandinavia, Siberia, and Mongolia where it's native. The lavendar-blue flower stalks can …
Type: Garden Guide Plant
… Masses of white bottlebrush style flowers cover this deciduous shrub in spring followed by deep red leaves in fall. Ideal for a partially shaded location in rich, moist, acidic soils. This selection from the native species features shorter internodes (more leaves per stem) and the bright red fall …
Type: Garden Guide Plant
… Heath aster is a native perennial plant that can be found in most counties in Illinois where they grow in the prairie and along roadsides and railroad tracks. It branches horizontally, producing a bushy plant up to 2 feet tall. The stems and leaves are hairy, and from late summer through fall it produces …
Type: Garden Guide Plant
… Colchicum ‘Autumn Herald’ produces goblets of amethyst violet flowers beginning in mid-September with orange stamens and a broad white blotch at the base of the petals. Plant this fairly large corm in sun or partial shaded conditions in soils … the flowering cycle for fall blooming colchicums. All parts of the plant are poisonous to people and animals alike. Extracts were once prescribed to treat a variety of ailments before …
Type: Garden Guide Plant
… Ozawa onion is a surprising little ornamental onion because it blooms in September and October after all the other onions are finished. The little floppy globes of red-violet flowers sit atop small … they will not be shaded out by earlier-blooming plants. It is one of the last outdoor flowers to bloom at the Chicago Botanic Garden. The related A. chinense may be a cultigen of thunbergii. …
Type: Garden Guide Plant
… Narcissus ‘W.P. Milner’ is in Division 1. This is a dwarf cultivar that blooms in early to mid spring. It has 2 ¼ inch flowers which face downward. The petals are broad and white with a small point at the tip. They open pale yellow but become …
Type: Garden Guide Plant
