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Corydalis lutea has clusters of bright yellow, spurred flowers that bloom above blue-green foliage. Plants can self-seed lightly in the garden but do not become invasive. Looks great colonizing stone walls or steps or popping up in the shade garden.
Rock crevices, talus, forest clearings, open woods, and on burned or otherwise disturbed areas in shallow, often dry soil; 10-1550 metres.