Penstemon hartwegii
Scarlet beard tongue, Hartweg penstemon
Penstemon Penstemon
P. hartwegii - P. hartwegii is a semi-evergreen perennial with narrow foliage and sturdy purple. stems which carry pink and white flowers in late summer.
Penstemon hartwegii is: Semi evergreen
Bushy, Upright
RHS AGM (Award of Garden Merit)
White, Bright-red in Summer; White, Bright-red in Autumn
Green in Summer; Green in Autumn
Leaf and bud eelworms , Slugs , Snails Leaf and bud eelworms , Slugs , Snails
Downy mildew Downy mildew
Deadhead after flowering to maintain vigour. In autumn, cut back by 2/3 of plant height to prevent wind damage, leaving 1/3 to protect the crown from frost. Remove all old stems at the base in mid- to late spring once new shoots emerge at ground level.
Division, Semi-hardwood cuttings, Softwood cuttings
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Penstemon hartwegii (Scarlet beard tongue) will reach a height of 0.7m and a spread of 0.5m after 2-5 years.
Beds and borders, Bees (attract & feed bees), City, Cottage/Informal
Plant in fertile, well-drained soil in full sun with shelter from cold, drying winds and frost. Tolerates light shade. Protect with a dry winter mulch.
Chalky, Loamy, Sandy
Well-drained
Acid, Alkaline, Neutral
Partial Shade, Full Sun
South, East, West
Sheltered
Tender in frost (H3), Hardy (H4)
Penstemon hartwegii
Scarlet beard tongue, Hartweg penstemon
Penstemon Penstemon
P. hartwegii - P. hartwegii is a semi-evergreen perennial with narrow foliage and sturdy purple. stems which carry pink and white flowers in late summer.
Mexico
Semi evergreen
Bushy, Upright
RHS AGM (Award of Garden Merit)
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White, Bright-red in Summer; White, Bright-red in Autumn
Green in Summer; Green in Autumn
Leaf and bud eelworms , Slugs , Snails
Deadhead after flowering to maintain vigour. In autumn, cut back by 2/3 of plant height to prevent wind damage, leaving 1/3 to protect the crown from frost. Remove all old stems at the base in mid- to late spring once new shoots emerge at ground level.
Division, Semi-hardwood cuttings, Softwood cuttings
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Penstemon hartwegii (Scarlet beard tongue) will reach a height of 0.7m and a spread of 0.5m after 2-5 years.
Beds and borders, Bees (attract & feed bees), City, Cottage/Informal
Plant in fertile, well-drained soil in full sun with shelter from cold, drying winds and frost. Tolerates light shade. Protect with a dry winter mulch.
Chalky, Loamy, Sandy
Well-drained
Acid, Alkaline, Neutral
Partial Shade, Full Sun
South, East, West
Sheltered
Tender in frost (H3), Hardy (H4)
Zone 10, Zone 9
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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: | Partial Shade, Full Sun | Tell us... |
Aspect: | South, East, West | Tell us... |
Exposure: | Sheltered | Tell us... |
Hardiness: | Tender in frost (H3), Hardy (H4) | Tell us... |
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