Rydberg's Penstemon is a small mountain penstemon, to 1 ft. tall, excellent for rock gardens. Displays 1-10 flowering stalks with 2-3 tight, spherical clusters of dark blue tubular flowers above each other on the stem. Requires good soil and extra water, grows in sun or light shade. Sow seed in fall or cold stratify. Zones 2-8.
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|Very Low Water