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Narrowed By:Type: Perennials+ Zone: 9+ Characteristics: Attracts Birds+ Spread: 3 - 6 ft
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Helianthus angustifolius Helianthus angustifolius
(Swamp sunflower)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

A profusion of golden yellow flowers appears for two to three weeks starting in early autumn. Daisy-like flowerheads are 3 inches across with 15 to 20 yellow ray florets radiating from a flat-topped purple or dark brown cone. The entire plant looks like a giant flame, drawing the attention of gardeners and many species of butterflies, bees, and other nectar feeders.

Silphium perfoliatum Silphium perfoliatum
(Cup plant)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

A coarse but bold perennial giant for the back of the border with yellow, daisy-like flowers in summer. Cups form where the toothed leaves meet the thick stems; birds are said to drink from the water held in the cups. Tough prairie natives that will self-sow, these plants need lots of sun and lots of room—a single plant can reach 7 or 8 feet tall and 6 feet across.


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