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Silphium asteriscus var. trifoliatum

Silphium asteriscus var. trifoliatum
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Family:  Asteraceae
Main Season:  Summer
Flower Colour:  Yellow
Leaf Colour:  Green
Foliage:  Deciduous
Position:  Sun
Soil Type:  Ordinary, medium loam
Height:  1.8m to 2.4m (6' to 8')
Peat Free?  Not yet
Hardiness Guide:  RHS H7 minimum at least -20C
Pot Size:  1L

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None available at present.

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syn. Silphium trifoliatum. An elegant prairie plant from north America with pretty yellow daisies on the top of stems with narrow leaves in whorls of 3. Not sure of height yet but probably at least 1.8m! Good soil in sun.