Foxglove Care: Growing Digitalis purpurea

title: "Foxglove Care: Growing Digitalis purpurea"

Digitalis purpurea — common foxglove — produces tall flower spikes covered with tubular blooms in shades of purple, pink, white, and cream, typically with spotted inner throats. It is one of the most dramatic vertical elements available for a shaded or partly shaded border. The catch: it is toxic to humans and animals, and it behaves as a biennial in most North American climates, flowering in its second year and dying afterward. Understanding this cycle is the foundation of successful foxglove gardening.

I don't grow foxgloves in my Long Island yard. This guide is sourced from Extension and botanical garden publications.

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Biennial vs. short-lived perennial — what foxglove actually is

Per Missouri Botanical Garden, Digitalis purpurea is "typically a biennial" but "may persist as a short-lived perennial" in some garden conditions. In the first year, the plant forms a basal rosette of large, woolly leaves. In the second year, it sends up flower spikes 3–5 feet tall and sets seed before dying.

The perennial behavior some gardeners observe comes from:

1. Side shoots from the base forming after the main spike is cut back — per NC State Extension, cutting the central spike promptly can encourage side shoot development.
2. Self-sown seedlings appearing around the parent plant, creating the illusion of a perennial clump.

Per Penn State Extension, some cultivars like 'Camelot' series have been selected for better perennial persistence, but even these are typically short-lived. Treat foxglove as a biennial and let it self-sow rather than expecting permanent perennial behavior.