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Silphium

Here is a genus of large sunflower-like plants native to the eastern half of North America. They are tall growing plants with many flowers produced on top of upright stems in late summer. They have high wildlife value, since their large seeds are loved by many of the seed eating bird species during their fall migrations south.

Silphium

Products found in this category: 4

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	Silphium perfoliatum Code: SI05-H Price: $2.00 Quantity in Basket: none
	'Cup plant' or 'Prairie dock' or 'Rosin wood' Erect clump forming plants that are hairless with leaves that rap around the thick-square stems to form little tubs were water collects and birds can get a drink. Finches feed on the nutritious seeds in late fall and winter. In midsummer and early fall plants produce large open branched corymbs like inflorescence with 50 to 100+, 2 to 3 in yellow daisy like flowers. Plants grow from 6-10 feet tall and 3-4 feet wide. Plants like a moister soil than other species but do very well in my drier sunny garden with some light watering during very dry periods. Long lived and appealing-plant in the prairie garden or the back of the border, or plant in the open woodland garden. Zones 4-9. Native from all the states east of the rocky mountians except Texas and Florida. This species is becoming very rare in the wild and is on the threatened species list for the state of Michigan. Cover with moist seed mix and use 12 weeks at 30-39ºF, move to 65-75ºF for Germination. Or sow and place outside in a sheltered location in the fall for Germination in the spring. 25 seeds.
	Silphium trifoliatum Code: RUO9-A8 Price: $2.95 Quantity in Basket: none
	'Whorled Rosinweed' A large species growing from 4 to 8 feet tall with sunflower-like yellow flowers and whorls of rough, narrow leaves. Its smaller than Silphium perfoliatum with smaller leaves. Birds love to feed on the seeds in late fall, and butterflies visit the flowers in late summer. Zones 3-9. 100 seeds
	Silphium integrifolium Code: SIIN-A8 Price: $2.95 Quantity in Basket: none
	100 seeds
	Silphium laciniatum Code: SILA-A8 Price: $2.95 Quantity in Basket: none
	'Compass Flower' or 'Compass Plant' or 'Rosinweed' Asteraceae: 50 seeds.