(Corydalis flexuosa 'China Blue') Genus:  Corydalis This is one of the coveted blue corydalises. It produces whorled clusters of sky-blue flowers on 18-inch tall plants.  Noteworthy Characteristics:  Blooms in the spring, goes dormant with the onset of summer's heat, and then may return in autumn to bloom once again.  Care:  Prefers partial shade and moderately fertile, well-drained soil. Propagation:  Sow seed when fresh; germination may be erratic. Divide in fall. Problems:  Downy mildew, rust, aphids, slugs, snails; spider mites indoors.

Overview

Height 1 ft. to 3 ft. Spread 1 ft. to 3 ft. Growth Habit Clumps Growth Pace Moderate Grower Light Part Shade Only Moisture Medium Moisture Maintenance Low Characteristics Fragrant Flowers, Showy Flowers, Showy Foliage Bloom Time Late Spring, Spring, Summer Flower Color Blue Uses Beds and Borders, Ground Covers, Specimen Plant/Focal Point Style Cottage Garden, Woodland Garden Seasonal Interest Spring Interest Type Perennials