The illustrated growing guide
Penstemon (Beardtongue)
Penstemon digitalis
Family Plantaginaceae
Est. zones 3-8
A tough native for lean, dry, sunny spots — tubular flower spikes that bees and hummingbirds love, over often-burgundy foliage. The Eastern 'Husker Red' type is adaptable; the dazzling Western penstemons demand gritty soil and gravel mulch and rot in rich, wet, or heavily mulched beds. Give it drainage and full sun and it's carefree.
Full Sun
Low water
Moderate growth
Native to North America
Attracts hummingbirds
Attracts beesI
Overview
Will penstemon (beardtongue) suit your garden, and what goes wrong.
Will it fruit where you are?
Enter your ZIP — we look up your USDA hardiness zone (2023 map) and check it against what penstemon (beardtongue) actually needs.
Hardy inZones 3-8Penstemon (Beardtongue) at a glance
Common penstemon (beardtongue) problems
- Almost none
- Root/Crown Rot in wet soil (the #1 killer)
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Growing
Light, water, soil, propagation and the season’s jobs.
How to grow penstemon (beardtongue): light, water & soil
How to plant & propagate penstemon (beardtongue)
When to spray penstemon (beardtongue)
Growing season. Drainage is everything — never mulch heavily over the crown.
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The year
What penstemon (beardtongue) asks for, month by month.
The penstemon (beardtongue) year, month by month
BloomWhat each band means
- Bloom — flowers open — pollinators working, frost on blossoms is the danger.
The penstemon (beardtongue) year as text
- Jan quiet month
- Feb quiet month
- Mar quiet month
- Apr quiet month
- May quiet month
- Jun bloom
- Jul quiet month
- Aug quiet month
- Sep quiet month
- Oct quiet month
- Nov quiet month
- Dec quiet month
These are the species' typical months — expect them a few weeks earlier in warm zones and later in cold ones. Watch the plant, not just the calendar.
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Ecology & uses
What it does for the garden, and what it is grown for.
Penstemon (Beardtongue) in the garden system
- Herbaceous layer perennial
- Nectary/insectary
What penstemon (beardtongue) is grown for
✓ Commonly eaten
Edibility, identification, and traditional-use notes here are general reference — not medical or veterinary advice, and not a claim that any plant treats or prevents anything. Medicinal ratings record how strongly a plant features in herbal tradition, nothing more. Never eat or dose a plant you have not positively identified. More on how to use this library.
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Cultivars
Named varieties of penstemon (beardtongue), ruled as a catalogue.
Best penstemon (beardtongue) varieties & cultivars
'Husker Red' (burgundy foliage, white flowers — native); 'Dark Towers'; 'Blackbeard'; Western species for xeriscapes
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Sources & plant ID
Where the care distinctions come from, and how the plant is filed.
Research basis
Sources behind this profile
No extension citations are attached to penstemon (beardtongue)yet. The care figures below come from the library's own catalogue rather than a traced primary source.
Plant ID
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Where to buy
Third-party nurseries — not Story Thyme Farms.
Third-party nurseries, not Story Thyme Farms. Prices are theirs.
Story Thyme Farms may earn a small commission from these links, at no cost to you — it never changes what we recommend.
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Questions
Penstemon (Beardtongue) questions, answered straight.
Is penstemon (beardtongue) safe for kids and pets?
Penstemon (Beardtongue) is commonly eaten and isn't considered toxic, but "commonly eaten" isn't a guarantee for any particular person or animal — allergies, quantity, and which part you eat all matter. Never eat a plant you haven't positively identified, and check with a vet before letting pets or livestock graze anything new.
How do you propagate penstemon (beardtongue)?
Division or seed.
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Elsewhere
Where penstemon (beardtongue) sits in the library.
Sunflower
Zinnia
Peony
Daylily