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Pollinate Happiness
Native to the Northeast, the Mid-Atlantic, the Southeast, and beyond

Foxglove beardtongue

Penstemon digitalis

Early-summer tubular flowers for bumble bees and hummingbirds, bridging the gap before coneflowers open.

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Scale and context

One plant, several views

Plant 2–4 ft. Tubular flowers 1 in long. These photos are all one individual, photographed in Franklin County, US-VT, US in June 2024, so you can see how a close-up relates to the whole plant.

Who it feeds

The white tubes are sized for bumble bees, mason bees, and hummingbirds in late May and June, a lean time between spring and summer bloom. Several specialist bees collect penstemon pollen.

What it does for the place

Tough, adaptable, and clumping, it bridges the early-summer gap in nearly any soil and holds its rusty seed heads through winter.

The story

A native penstemon of eastern meadows, named for its resemblance to foxglove and for the fuzzy sterile stamen, the beardtongue, inside each flower. The cultivar 'Husker Red' was the Perennial Plant Association's Perennial Plant of the Year in 1996.

Worth knowing

  • Flowers have nectar guides visible only in ultraviolet.
  • The seed heads rattle and are prized in dried arrangements.
  • It seeds itself around gently without becoming a pest.

Saving its seed

Ripe: Sep, Oct. Pointed brown capsules split at the top.

Collect: Snip capsules, invert and shake out dust-fine seed.

Sow: Winter-sow outdoors (jugs or flats) any time after the first hard freeze. Give it about 30 days of cold-moist stratification. Surface sow; needs light.

Cold-stratification days follow Prairie Moon Nursery's January 2026 germination codes where that nursery lists the species; others follow common nursery practice. Protocols vary with seed lot and supplier, so check your seed packet.

Seed saving calendar for your zip code →

Sources and further reading