The common name for the Hardy perennial Amsonia is blue star.
It typically flowers in the summer.
Some of the latin names include Amsonia hubrichtii, Amsonia tabernaemontana, and Amsonia hubrechtii. Common names include amsonia blue and star amsonia.
Amsonia Blue Star are attractive medium sized plants that can grow from 60 to 90 cm in height. As the name suggests Blue Star has blue star shaped flowers; these grow on long stems. these plants are ideal for beds that are located in the shade.
Thomas G. Barnes @ USDA-NRCS PLANTS Database / Barnes, T.G. & S.W. Francis. 2004. Wildflowers and ferns of Kentucky. University Press of Kentucky
Amsonia (Blue Dogbane) photograph by Dendroica Cerulea.
It is best to sow Amsonia just below the soil surface, with a spacing of 50 to 75 cm in the middle of spring or the autumn.
Blue star prefers partly shady conditions, but can be grown in full sunlight as long as it is kept moist. The soil should be cool and moist. Amsonia requires between four and six weeks to germinate.
If growing indoors it is best to start seeds off nine to eleven weeks before planting outside in the late spring. Ideally they should be grown in peat pots at a temperature of 14 to 18 degrees centigrade when growing inside.
Amsonia plants requires light pruning and watering in the driest months of summer.
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