Cultivated varieties may produce seed that is not viable, or that produces characteristics and plants with a level of quality that differ from the parent from which they came. Plants tend to be vigorous growers that naturalize via shallow roots and self-sowing. In some species, it turns red-brown during the growing season.Īnd as mentioned, the rays, or petals, are blue, pink, purple, or white. The flowers have a daisy-like yellow center disc that contains florets, or many small flowers. The foliage is green and may vary, with unique characteristics such as hairy or smooth, deeply serrated or smooth edged, broad or narrow, heart-shaped, or bronze in the fall. The stems are green or brown, hairy or smooth, and sometimes woody. ![]() The North American types have sprays of multiple blossoms at their terminal ends, with diameters of one-half to one inch across.Įuropean and Asian species have fewer, larger flowers per stem that measure approximately two inches across. Plants grow in a clumping fashion and have upright stems. belgii, that spreads two to three feet across.Ĭultivated varieties are often more compact and feature enhancements such as disease resistance, wider zone suitability, and greater shade tolerance. ericoides, with a spread of three to 12 inches, to three- to six-foot New York, S. Wild species range in height from the three- to six-inch heath type, S. However, all are still called asters in common parlance, and it is not uncommon to find many identified by their original classifications in horticultural and merchandising literature.Īnother common name for the fall-blooming perennial varieties is the “Michaelmas daisy.” It is derived from the flowers’ bloom time, which is often around the Christian feast day of St. With the botanical reclassification, North American species were regrouped into various genera, including: ![]() amellus ‘King George’ in Picton Garden, England.
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