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| Plant Expert: |
Allan Armitage
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| Ageratum houstonianum |
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Origin:
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West Indies, Mexico
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Partial/Full sun.
Moderate to wet conditions.
Armitage says: "They are generally sold in small containers in the spring, ready for transplanting; place 9-12" apart in full sun and well-drained soils. In the North, plants generally persist all season, in the South, the dense flowers may trap too much moisture and the combination of heat and humidity often result in poor performance by mid summer.Consistent moisture is helpful and plants vigor and flowering time is much reduced when soils dry out.Package seed is available for sale to the gardener and may be sown at 70-75F in moist conditions."
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Growth:
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Range: Grows to 3'.
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Flowers:
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Color(s): Lavender
Season(s):
Summer
Armitage says: "Flower stems are borne in the upper axils and terminal apex and are made up of heads of 5-15 densely clustered tubular flowers.Each flower consists of 5 lobes, usually spreading, giving the flower head a tassel-like appearance (the plants are also known as Tassel Flower). In the North, plants generally persist all season, in the South, the dense flowers may trap too much moisture and the combination of heat and humidity often result in poor performance by mid summer."
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Foliage:
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Armitage says: "The opposite leaves are usually heart shaped at the base and rounded at the apex, with crenate (wavy) margins."
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Landscape Value:
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Can be used as a container plant.
Can be used as an ornamental plant.
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Other:
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Armitage says: "A love/hate relationship exists with many bedding plants, mainly because of the lack of creativity in their use.Seeing little blue meatballs lining walk after walk in the American front yard became a little boring; such is the price of success.The plants were named after William Houston, an American physician who collected the species in the Antilles and Mexico.The ornamental plant industry has been breeding Ageratum for some time.In 1940, Waller-Franklin Seed Co."
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Other Ageratum houstonianum References & Articles:
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