Aster tataricus aka Tartarian Aster

Aster tataricus, or Tatarian aster, is a tall herbaceous perennial. It belongs to the daisy family, Asteraceae. Its native range spans temperate parts of eastern Asia. These include Russia, Mongolia, China, Korea, and Japan. In Japan, it grows in subalpine meadows and wet sites. Other records place it in marshy mountain ground.

The plant grows upright to about 6 feet [1.83 metres]. Its garden spread reaches about 3 feet [0.91 metres]. Most stems stand without stakes, despite their height. The large lower leaves have a broad, paddle-like shape. They reach 2 feet [0.61 metres] long. Their width can reach 0.5 feet [0.15 metres]. Leaves grow much smaller toward the tops of stems. Underground rhizomes let the plant spread beyond its first clump.

Flowers form broad, flat clusters at the stem tips. Each flower head measures about 1 inch [0.025 metres] across. Lavender to violet-blue rays surround a yellow centre. The many small heads make a strong late-season display. Missouri Botanical Garden lists September as its bloom month. Its account also describes flowers that stay fresh until first frost. Butterflies visit the blooms. The tall stems suit the rear of a border. The plant also fits wildflower areas where it can spread.

Grow this aster in full sun with moderate water. Average garden soil suits it, provided water drains well. Missouri Botanical Garden lists USDA hardiness zones 3–9. It describes the plant as easy to grow. Yet rich, moist soil can make the stems need stakes. In good conditions, rhizomes can spread with force. Divide clumps every three or four years to limit growth. This spreading habit deserves care where space is tight. The same source reports no major pest or disease problems.

Plants For A Future lists the leaves as edible. It also mentions eating young plants, but gives no preparation details. Its edible-use rating is low, at one out of five. The source reports no known hazards. That statement does not establish safety for every use or pet. The roots have a long history in traditional Chinese medicine. Reported uses include coughs and other chest complaints. These records describe traditional uses, not proof of safe treatment.