Slender Blue Beardtongue

Penstemon procerus

Pollinator plant

Growing it

When	Flowers June to July; fruits August to September
Type	wildflower
Sun	Full sun
Water	Low
Soil	pH 6–8
Hardiness	zone 3–8
Mature height	0.3 m
Mature spread	0.45 m
Spacing	0.3 m
Years to maturity	2
Bloom	Jun–Jul
Flower colour	Blue checked against its common name
In bloom	June July
Fruit	Aug–Sep
Native to	AB, SK

lance-shaped leaves about 8 cm long in opposite pairs

Where it has been recorded

BothSpecimensObservations

194 squares of about 28 km, each holding at least one record. A square is not a claim that the plant grows throughout it, and an unshaded square is unrecorded rather than empty. Darker squares hold more records, which follows roads and towns as much as it follows the plant. 51 herbarium specimens and 490 field observations this project may redraw. A filled dot is a pressed sheet somebody can re-examine; a hollow ring is a photograph identified by community agreement. Where the dots are dense is where people have looked, not where the plant is commonest, and empty ground is unsurveyed rather than unoccupied. How this map is made.

Which ecoregions the records fall in

Aspen Parkland central AB / SK: 199 records, high confidence
Northern Continental Divide south AB: 199 records, high confidence
Cypress Upland south AB / SK: 192 records, high confidence
Eastern Continental Ranges central AB: 92 records, high confidence
Mixed Grassland south AB / SK: 75 records, high confidence
Moist Mixed Grassland south AB / SK: 67 records, high confidence
Peace Lowland north AB: 58 records, high confidence
Western Alberta Upland central AB: 33 records, high confidence
Fescue Grassland south AB: 13 records, medium confidence
Boreal Transition central AB / SK: 6 records, low confidence

These are counts of records collected somewhere in the region, which is the resolution of the evidence: the map above shows where inside it. A region with 3 records is not the same claim as one with three hundred, so the count travels with the region. A region missing from this list means nobody has recorded it there, which is not the same as the plant being absent. Records within 900 m of a border count for neither side, because the border is not drawn finely enough to say which one they are on. Source: GBIF occurrence search + PRESERVED_SPECIMEN pass, retrieved 2026-08-24. Boundaries digitised from the National Ecological Framework for Canada v2.2 (Ecological Stratification Working Group 1995), simplified to about 900 m for display: an outline is accurate to roughly a kilometre, not to the metre. How these counts are made.

See every observation, live and current, on GBIF or iNaturalist.

Documented animals

29 documented relationships.

nectar for

Agriades aquilo Specimen records from iNaturalist.org
Bear-like Digger Bee LaManna et al. 2020
Black-tailed Bumble Bee Specimen records from www.bumblebeewatch.org
Brown-belted Bumble Bee Specimen records from ecdysis.org
Brown-tailed Bumble Bee Specimen records from www.bumblebeewatch.org
Carterocephalus skada Specimen records from iNaturalist.org
Central Bumble Bee Specimen records from www.bumblebeewatch.org
Coelioxys sodalis Specimen records from ecdysis.org
Hoplitis hypocrita LaManna et al. 2020
Hoplitis producta Specimen records from ecdysis.org
Hunt's Bumble Bee Specimen records from www.bumblebeewatch.org
Indiscriminate Cuckoo Bumble Bee Specimen records from www.bumblebeewatch.org
Lasioglossum pruinosum Specimen records from ecdysis.org
Nevada Bumble Bee Specimen records from www.bumblebeewatch.org
Orange-banded Bumble Bee Specimen records from www.bumblebeewatch.org
Osmia albolateralis Specimen records from ecdysis.org
Osmia tristella Specimen records from ecdysis.org
Red-belted Bumble Bee Specimen records from ecdysis.org
Sitka Bumble Bee Specimen records from www.bumblebeewatch.org
Two-ranked Bumble Bee Specimen records from www.bumblebeewatch.org
Yellow-fronted Bumble Bee Specimen records from www.bumblebeewatch.org

pollen for

Black-tailed Bumble Bee millerse/Pollination-CollectionBauer & P.J 1983
Brown-tailed Bumble Bee millerse/Pollination-CollectionBauer & P.J 1983
Mountain Bumble Bee millerse/Pollination-CollectionBauer & P.J 1983
Nevada Bumble Bee millerse/Pollination-CollectionBauer & P.J 1983
Red-tailed Bumble Bee millerse/Pollination-CollectionBauer & P.J 1983
Two-ranked Bumble Bee millerse/Pollination-CollectionBauer & P.J 1983
Western Bumble Bee millerse/Pollination-CollectionBauer & P.J 1983
Yellow-fronted Bumble Bee millerse/Pollination-CollectionBauer & P.J 1983

Also worth knowing

Safety

Toxicity not assessed, absence of a warning is not a guarantee of safety

Buying it

About $8–$16 per plant (estimate), usually from a native-plant nursery. Estimate (herb default); AB retail as of 2026

Where these numbers came from

Flower detail: not verified, a genus-level estimate