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Digitalis purpurea (Scrophulariaceae)
One of the loveliest, most important plant species that has been introduced from Europe and naturalized in various parts of North America. The flowers are numerous, on a spike, and range from a deep purple to lilac with conspicuous spots interlining the throat of the tubular flower. As a biennial, the leaves form a rosette the first year followed by the flower spike the next year. Prefers a nitrogen-rich sandy loam soil, in partial sun to full shade.
Average planting success with this species: 50%