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Ageratum houstonianum - Fine Gardening Plant Guide
Fine Gardening — There are many cultivars available of this fast-growing annual. They are best used as bedding, edging, or container plants. Panicles of blue, pink, purple, or white flowerheads arise from oval, downy leaves in midsummer and continue until frost. ...More…
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Ageratum Blue Danube (2,500 Seeds)
Amazon.com — Warranty NoneMore…
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AGERATUM INSECT PROBLEMS
Michigan State University Extension — Ageratum may be attacked by two insects. The corn earworm tunnels in stems and feeds on the foliage. The greenhouse leaf tier ties leaves together with webbing then feeds onMore…
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AGERATUM DISEASE PROBLEMS
Michigan State University Extension — The only disease of consequence is powdery mildew and late in the season, infections can be ignored. Powdery mildew is a white or gray powdery growth on the leaves.More…
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Ageratum houstonianum - Fine Gardening Plant Guide
Fine Gardening — A seldom-seen annual or short-lived perennial, this easy-to-grow plant performs as the perfect filler in beds and containers. It forms a well-branched compact mound of deeply lobed, dark green leaves, which provide an interesting textural ...More…
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Phytotoxicity of Ageratum conyzoides residues towards ...
Amazon.com — Author D.R. Batish Author H.P. Singh Author S. Kaur Author R.K. Kohli Format HTML Number Of Pages 2 Publication Date 2006-04-01More…
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AGERATUM DISEASES
Old House Web — The only disease of consequence is powdery mildew and late in the season infections can be ignored. Powdery mildew is a white or gray powdery growth on the leaves. If the disease is a problem early in the season, use benomyl according to label ...More…
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AGERATUM INSECTS
Old House Web — Ageratum may be attacked by two insects. The corn earworm tunnels in stems and feeds on the foliage. The greenhouse leaf tier ties leaves together with webbing then feeds on them. No chemical control is listed for these insects on ageratum. Home ...More…
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Ageratum houstonianum 'Blue Horizon' Plant of Merit
Missouri Botanical Garden — Lavender to purplish-blue Annual. Easily grown in average, moist, well-drained soils in full sun. Prefers rich, fertile soils with good drainage and consistent moisture throughout the growing season. Plants tend to wilt quickly if soils are ...More…
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Ageratum houstonianum
Missouri Botanical Garden — Floss flower is a frost-tender annual of the aster family that provides continuous bloom for beds, gardens or containers from late spring to frost. Features fluffy flowers (basically asters with ray flowers absent) in flattened to slightly ...More…
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Annual Flowers: Ageratum houstonianum
NC State University Coop Extension — Leilani Blue, Neptune Blue, Redtop, Summer Stars, True Blue [Neptune Blue] 6 to 24 inchesMore…
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Ageratum Hawaii Shell Pink
Denver Plants — Introduced in 1999... Ageratum 'Hawaii Shell Pink' is a compact Ageratum that flowers 1 to 2 weeks before other varieties. Ageratum Shell Pink has a very uniform growth habit making it an excellent choice for containers or borders. Ageratum ...More…