How to Grow Foxglove Beardtongue
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Foxglove Beardtongue
Penstemon digitalis
flowerFoxglove Beardtongue is a semi-evergreen perennial native to eastern North America, reaching 2-4 feet tall with tubular white or pale pink flowers arranged in dense spikes. The plant produces attractive basal rosettes of lance-shaped leaves and blooms mid-to-late spring, providing excellent nectar for hummingbirds and bees. It is drought-tolerant once established and requires minimal maintenance, making it ideal for native gardens and pollinator landscapes.
When should you plant Foxglove Beardtongue in your zone?
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Example Foxglove Beardtongue timeline · Pittsburgh, PA (Zone 6b)
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Plant Foxglove Beardtongue
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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First Foxglove Beardtongue blooms
Around Aug 15≈ 120 days after planting
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-8; performs best in cooler to moderate climates
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Seedling
2-3 weeksTiny cotyledons emerge; fine, delicate foliage develops over 2-3 weeks
Keep soil consistently moist but not waterlogged. Provide bright, indirect light. Avoid damping off by ensuring good air circulation.
Rosette Formation
4-8 months (first season)First year growth; plant develops lance-shaped leaves in basal rosette, no flowering occurs
Water moderately during dry spells. Mulch lightly around plants. Remove any flower stems that emerge the first season to encourage root development.
Bolting & Budding
3-4 weeksIn spring of second year, tall flower spikes emerge from the center of the rosette with buds forming along the stem
Stake tall varieties if needed in windy locations. Ensure adequate water during bud formation. Deadhead spent lower flowers to encourage continued blooming.
Flowering
4-6 weeksTubular white or pale pink flowers open progressively from bottom to top of spike; flowers are highly attractive to hummingbirds
Provide consistent moisture during flowering. Deadhead spent flowers to extend bloom and prevent excessive self-seeding. Divide plants if becoming crowded.
Seed Production & Senescence
4-8 weeksFlowers fade; seed pods develop along the spike; foliage may yellow and die back by mid-summer in hot climates
Leave seed heads for self-seeding or collect seeds before they scatter. Cut back dead foliage. Reduce watering. Do not deadhead if you want self-seeding.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Ensure good air circulation, avoid overhead watering, spray with neem oil or sulfur if needed
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Remove infected foliage, improve drainage and air circulation, apply fungicide if severe
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and
Hand-pick, use copper barriers, apply diatomaceous earth around base
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Increase humidity, spray with water, apply insecticidal soap if needed
Uses
Hummingbird & Pollinator Magnet
WildlifeFoxglove Beardtongue is highly attractive to hummingbirds and native bees, serving as an important nectar source in spring gardens. The tubular flowers are perfectly adapted for hummingbird feeding. [source]
Cut Flowers & Arrangements
CraftThe tall, elegant flower spikes are excellent for fresh or dried flower arrangements, providing vertical interest and a native garden aesthetic to floral designs. [source]
Low-Maintenance Landscape
HouseholdOnce established, Foxglove Beardtongue is drought-tolerant and requires minimal fertilizer or pest management, making it ideal for water-wise and native plant gardens. [source]
Native Plant Restoration
WildlifeAs a native plant to eastern North America, it supports local ecosystems and works well in prairie gardens, woodland edges, and habitat restoration projects. [source]
Harvest Tips
Foxglove Beardtongue is a flowering ornamental, not harvested for food. Cut flower spikes for fresh arrangements when 50% of flowers are open. For seeds, allow seed pods to dry on plant, then collect and store in cool, dry conditions. Seeds can be sown immediately or saved for spring sowing.
Fun Facts
- 🌱 The common name 'Beardtongue' refers to the hairy stamen inside the flower that resembles a hairy tongue; the genus Penstemon comes from Greek words meaning 'five' and 'stamen'
- 🌱 Foxglove Beardtongue readily self-seeds, creating new plants if allowed to produce seed pods; gardeners can collect seeds for controlled propagation or remove seed heads to prevent excessive spreading
- 🌱 Unlike true foxgloves (Digitalis), which are toxic, Penstemon species are non-toxic and safe to have in gardens with children and pets
Gardening Terms
New to gardening? Learn about terms used in this guide:
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