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Hardiness: USDA Zone 4a: to -34.4 °C (-30 °F) USDA Zone 4b: to -31.6 °C (-25 °F) USDA Zone 5a: to -28.8 °C (-20 °F) USDA Zone 5b: to -26.1 °C (-15 °F) USDA Zone 6a: to -23.3 °C (-10 °F) USDA Zone 6b: to -20.5 °C (-5 °F) USDA Zone 7a: to -17.7 °C (0 °F) USDA Zone 7b: to -14.9 °C (5 °F) USDA Zone 8a: to -12.2 °C (10 °F) USDA Zone 8b: to -9.4 °C (15 °F) USDA Zone 9a: to -6.6 °C (20 °F) USDA Zone 9b: to -3.8 °C (25 °F)
Propagation Methods: By dividing the rootball From seed; direct sow outdoors in fall From seed; winter sow in vented containers, coldframe or unheated greenhouse From seed; sow indoors before last frost From seed; direct sow after last frost
Seed Collecting: Allow seedheads to dry on plants; remove and collect seeds Properly cleaned, seed can be successfully stored
On Mar 12, 2007, bluespiral from Ellicott City, MD (Zone 7a) wrote:
This is one of those members of the daisy group that, along with members of the carrot group, like fennel, play host to tiny predatious hover flies and wasps that rein in activities of various caterpillar species. A border that includes these plants naturalized somewhere in the vicinity of an organic vegetable garden can contribute to the complexity of life that nurtures balance between "bad guys" (prey) and "good guys" (predators) (purely from human point of view).
On Jan 22, 2003, poppysue from Westbrook, ME (Zone 5a) wrote:
This is another one of those plants that gives you a lot of bang for your money. It just goes & goes ... like the energizer bunny. Plants are well behaved, it stays in a neat clump, and the stems are sturdy. The bright yellow daisies are a real eye-catcher in the garden. It just seems to ALWAYS look good. My only problem has been a population of red aphids that seem to find it irresistable. However, they don't pose much of a threat and they are easily taken care of.
On Nov 15, 2000, jody from MD &, VA (Zone 7b) wrote:
This species of Heliopsis (depending on cultivar)will grow to about 3' to 5' tall and 2' to 3' in width. Flowers are yellow and have single, semi double or double flowers and bloom in late summer. 'Light of Loddon' have double flowers. Best cultivated in sun, rich, well drained soil but will tolerate poor conditions. Deadhead to promote more flowering, cut back to ground in fall. Propagate from seed, division, or cuttings. Hardy zones 4-9.
Regional...
This plant has been said to grow in the following regions:
Calistoga, California Seymour, Connecticut Mapleton, Illinois Greenville, Indiana Indianapolis, Indiana Lansing, Kansas Ellicott City, Maryland Blissfield, Michigan Dearborn Heights, Michigan Mason, Michigan Young America, Minnesota Republic, Missouri
5 members have or want this plant for trade.
