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Penstemon laetus subsp. roezlii (Roezl's penstemon )
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2 hours care
per year
per year
0.5m
Max height
Max height
0.35m
Max spread
Max spread
2-5 years
To maturity
To maturity
Plant details
Botanical name
Penstemon laetus subsp. roezlii
Other names
Regel's mountain penstemon, Roezl's penstemon , Mountain blue beardtongue, Penstemon roezlii
Genus
Penstemon Penstemon
Species
P. laetus subsp. roezlii - P. laetus subsp. roezlii is an erect, hairy perennial with linear to lance-shaped, often folded, grey-green leaves and upright racemes of narrowly tubular-bell-shaped, purple-blue flowers from late spring into midsummer.
Penstemon laetus subsp. roezlii is: Deciduous
Habit
Erect
Flower
Purple, Blue in Spring; Blue, Purple in Summer
Foliage
Grey-green in Spring; Grey-green in Summer; Grey-green in Autumn
How to care
Watch out for
Specific pests
Glasshouse red spider mite , Leaf and bud eelworms , Slugs , Snails Glasshouse red spider mite , Leaf and bud eelworms , Slugs , Snails
General care
Pruning
Deadhead after flowering to maintain the plant's strength. Cut back in early spring.
Propagation methods
Division, Seed, Semi-hardwood cuttings, Softwood cuttings
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Where to grow
Penstemon laetus subsp. roezlii (Roezl's penstemon ) will reach a height of 0.5m and a spread of 0.35m after 2-5 years.
Suggested uses
Beds and borders, Cottage/Informal, Gravel, Rock, Wildlife
Cultivation
Grows best in moderately fertile, well-drained soil in full sun. Will tolerate a wide range of conditions other than heavy, waterlogged sites.
Soil type
Chalky, Loamy, Sandy
Soil drainage
Well-drained
Soil pH
Acid, Alkaline, Neutral
Light
Full Sun
Aspect
South, East, West
Exposure
Exposed, Sheltered
UK hardiness Note: We are working to update our ratings. Thanks for your patience.
Hardy (H4)
Companion plants
Botanical name
Penstemon laetus subsp. roezlii
Other names
Regel's mountain penstemon, Roezl's penstemon , Mountain blue beardtongue, Penstemon roezlii
Genus
Penstemon Penstemon
Species
P. laetus subsp. roezlii - P. laetus subsp. roezlii is an erect, hairy perennial with linear to lance-shaped, often folded, grey-green leaves and upright racemes of narrowly tubular-bell-shaped, purple-blue flowers from late spring into midsummer.
Foliage
Deciduous
Habit
Erect
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Colour
Flower
Purple, Blue in Spring; Blue, Purple in Summer
Foliage
Grey-green in Spring; Grey-green in Summer; Grey-green in Autumn
How to care
Watch out for
Specific pests
Glasshouse red spider mite , Leaf and bud eelworms , Slugs , Snails
General care
Pruning
Deadhead after flowering to maintain the plant's strength. Cut back in early spring.
Propagation methods
Division, Seed, Semi-hardwood cuttings, Softwood cuttings
Monthly care advice
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Where to grow
Penstemon laetus subsp. roezlii (Roezl's penstemon ) will reach a height of 0.5m and a spread of 0.35m after 2-5 years.
Suggested uses
Beds and borders, Cottage/Informal, Gravel, Rock, Wildlife
Cultivation
Grows best in moderately fertile, well-drained soil in full sun. Will tolerate a wide range of conditions other than heavy, waterlogged sites.
Soil type
Chalky, Loamy, Sandy
Soil drainage
Well-drained
Soil pH
Acid, Alkaline, Neutral
Light
Full Sun
Aspect
South, East, West
Exposure
Exposed, Sheltered
UK hardiness Note: We are working to update our ratings. Thanks for your patience.
Hardy (H4)
USDA zones
Zone 9, Zone 8, Zone 7, Zone 6, Zone 5
In order to add a note on this plant, please add this plant to your plant lists.
| This plant likes... | Garden match | |
| Soil types: | Chalky, Loamy, Sandy | Tell us... |
| Soil drainage: | Well-drained | Tell us... |
| Soil pH: | Acid, Alkaline, Neutral | Tell us... |
| Light: | Full Sun | Tell us... |
| Aspect: | South, East, West | Tell us... |
| Exposure: | Exposed, Sheltered | Tell us... |
| Hardiness: | Hardy (H4) | Tell us... |
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