Symphyotrichum oolentangiense
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Hardiness Zone: 3-8 Height: 2-3 feet; 0.6-0.9 metres Spread: 1.5-2 feet; 0.45-0.6 metres Sun: Full to part sun Water: Dry to medium Wildlife: The flowers are visited by butterflies, bees, skippers, and flies. Certain songbirds will feed on the seeds. Bloom Colour: Lavender and purple/yellow Tolerates: Drought Culture: Prefers medium to dry, well-drained soil but is not particular about soil type. It will readily grow in loam, clay, or sand, even soil containing gravelly or rocky material. Noteworthy Characteristics: Sky Blue Aster consists of an erect, light green central stem with alternate leaves. The basal leaves are ovate with serrated edges while the smaller, upper leaves are more linear-oblong in shape. The plant will produce a panicle of flowerheads that consist of lavender ray florets surrounding yellow or reddish-purple disk florets. After the month long blooming period, the florets give way to small achenes that are wind-dispersed.