General Culture:
Easily grown in average, medium, well-drained soil in full sun. Compact form with less tendency to flop than other cultivars of this species. Spreads in the garden, but is less aggressive than the species. Divide every 2-3 years to control grow.
Noteworthy Characteristics:
This obedient plant cultivar is an erect, clump-forming but rhizomatous perennial which typically grows 1.5-2' tall on stiff, square stems and features dense spikes of pure white, tubular, two-lipped, snapdragon-like flowers which bloom throughout the summer. Blooms from bottom to top on each spike. Narrow, lance-shaped, sharp-toothed leaves (to 4" long). Genus members are commonly called obedient plants because each individual flower will, upon being pushed in any one direction, temporarily remain in the new position as if it were hinged. Sometimes also commonly called false dragonhead because the flowers are suggestive of those of dragonhead (Dracocephalum). May also be sold as 'Alba Nana' a cultivar unrecognized by current authorities.
Problems:
No serious disease or insect problems. Rust is an occasional problem. Can be an aggressive spreader (see General Culture Section above).
Uses:
Provides color and contrast to the perennial border. An excellent plant for naturalizing in a wild garden, prairie or meadow. Valued for its late season bloom.
© Missouri Botanical
Garden, 2001-2010
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