Silphium integrifolium

Rosin Weed
Family: Asteraceae (Aster Family)
       
·        Hardiness Zones:  4-8
·        Height: 60-72 inches
·        Spread: 1-3 feet
·        Bloom Time: July to September
·        Bloom: yellow rays and yellow center disk
·        Light: full sun
·        Soil: average, well drained soil; tolerates clay
·        Moisture: medium
·        Use: prairies, wildflower/native plant gardens, naturalized areas, meadows or moist, open woodland areas; attracts birds and butterflies
·        Care: once established, division is not recommended
·        Concerns: no serious insect or disease problems
·        Native to: eastern and central North America
·        Notes: common name comes from the resinous gummy sap exuded by broken/cut plant stems; erect, hairy stems sparsely clad with pairs of medium green leaves; plants develop tap roots
·        Supplier: Agrecol Native Nursery
·        Teaching Garden Location & Code: Demonstration Prairie I034

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