Penstemon (Beardtongue)
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Penstemons or Beardtongues are usually growing as perennials with a basal leaf rosette and several upright growing stems in summer with numerous showy, white, red, rose, blue, or bluish lilac trumpet shaped flowers. They are native in open, sunny spots in mountainous regions in North and Central America. Most beardtongue species are easily grown in any rich, well drained soil in a sunny spot. Sow the fine seeds flat from autumn to mid spring on any well drained, rich soil, only finely cover seeds with sand. As for most winter hardy perennials, seeds require a cooling period for several months before they germinate in late spring to early summer, thus during winter place pots outside in a protected spot. Carefully transplant in summer or autumn as soon as seedlings are strong enough. All are USDA Climate Zone 6. 40 seeds per package. |
Articles
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Penstemon abietinus (Firleaf Beardtongue)20cm, Firleaf Beardtongue is a smaller species which makes a cushion with very narrow leaves and several stalks with pale blue flowers. For any rich, well drained soil in full sun. An excellent plant for the rock garden. Seeds from a certified wild collection in Sevier County, Utah, USA, at some 2.200m. VI-VIII. |
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Penstemon acuminatus (Sand-dune Penstemon)35cm, Sand-dune Penstemon has showy brilliant sky-blue flowers with a rosy shade above bluish-green leaves. For any rich, very well drained and preferably rocky to sandy soil in full sun. An excellent plant for the rock garden. Seeds from a certified wild collection in Douglas County, Washington, USA, at some 300 m. VI-VIII. |
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Penstemon alamosensis (Los Alamos Beardtongue)60 (100)cm, Los Alamos Beardtongue makes showy stalks with bright fire-red to orange-red flowers above a basal rosette of rather large, bluish-green leaves. It is native of open spots in woods, cliffs and mountain slopes in New Mexico and Texas, USA. For any rich, well drained soil in a sunny spot. An excellent plant for the rock garden. Seeds from cultivated plants. IV-VI. |
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Penstemon albidus (White Beardtongue)30cm, White Beardtongue has rather larger, white to pale lavender-blue flowers. Seeds are from a lavender-blue flowering population. For any rich, well drained soil in a sunny spot. An excellent plant for the rock garden. Seeds from a certified wild collection in Baca County, Colorado, USA, at some 1.550m. VI-VIII. |
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Penstemon ambiguus (Sand Beardtongue)20 (40)cm, Sand Beardtongue is a dwarf, rather cushion forming perennial with densely arranged, semi-woody stems with numerous, small, light lilac blue to white and almost completely flat flowers. It is native of sandy soils in Arizona, Colorado, Kansas, New Mexico, Oklahoma, Texas, Utah (USA), and in Mexico. For any rich, very well drained, slightly rocky or sandy soil in partial shade in the rock garden. Seeds from a certified wild collection in Yuma County, Colorado, USA, at some 1.100 m. V-VIII. |
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Penstemon angustifolius var. caudatus (Broadbeard Beardtongue)30 (60)cm, Broadbeard Beardtongue is a perennial with upright stems with showy, quite large, blue to pale blue, lavender or rose flowers over bluish-green, glabrous leaves. It is native of sandy to rocky soils in shortgrass prairies and open shrub forest in the southwestern USA. For any rich, very well drained, slightly rocky or sandy soil in full sun. Excellent in the rock garden. V-VII. |
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Penstemon angustifolius var. venosus (Broadbeard Beardtongue)45cm, Broadbeard Beardtongue is a showy species with several stalks with pale lavender-blue flowers above bluish-green leaves. For any rich, well drained soil in a sunny spot. An excellent plant for the rock garden. Seeds from a certified wild collection in San Juan County, New Mexico, USA, at some 1.750m. VI-VIII. |
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Penstemon arenicola (Sand Penstemon)20cm, Sand Penstemon is a choice dwarf Penstemon species with bluish-green leaves and brilliant blue flowers. For any rich, well drained soil in a sunny spot. An excellent plant for the rock garden. For any rich, very well drained and preferably rocky to sandy soil in full sun. An excellent plant for the rock garden. Sublette County, Wyoming, USA, at some 2.150m. VI-VIII. |
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Penstemon aridus (Stiffleaf Penstemon)15cm, Stiffleaf Penstemon a smaller species forming dense cushions with several stalks with blueish-purple flowers. For any rich, very well drained and preferably rocky to sandy soil in full sun. An excellent plant for the rock garden. Seeds from a certified wild collection in Meagher County, Montana, USA, at some 2.350m. VI-VIII. |
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Penstemon auriberbis (Colorado Beardtongue)20 (30)cm, Colorado Beardtongue makes a perennial a basal leaf rosette and upright stems with showy, quite large, pale pink, trumpet shaped flowers. Penstemon auriberbis is native of sandy to rocky soils in Colorado (USA). For any rich, very well drained, slightly rocky or sandy soil in full sun. Excellent in the rock garden. VI-VII. |
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Penstemon azureus var. azureus (Azure Penstemon)30 (40)cm, Azure Penstemon is a choice species from western North America and makes bluish-green leaves and showy sky-blue flowers. For any rich, well drained soil in a sunny spot. An excellent plant for the rock garden. VI-VIII. |
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Penstemon baccharifolius (Baccharis-Leaf Penstemon)20 (30)cm, Baccharis-Leaf Penstemon has showy deep red flower tubes above oblong leaves. Native of rock walls in Texas. Seeds from a certified wild collection in Edwards County, Texas, USA at some 750m. For any rich, well drained soil in a sunny spot. Excellent in a protected spot in the rock garden. VI-VIII. |
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Penstemon barrettiae (Barrett's Beardtongue)15cm, Barrett's Beardtongue is a small cushion forming species with rosy-lavender flowers above leathery bluish-gray leaves. Seeds from a certified wild collection in Klickitat County, Washington, USA at some 100m. For any rich, well drained soil in a sunny spot. Excellent in a protected spot in the rock garden. VI-VIII. |
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Penstemon bradburyi (Large-flowered Beardtongue)70 (120)cm, Large-flowered Beardtongue (syn. Penstemon grandiflorus) is an most ornamental perennial with bluish green, slightly succulent leaves and quite tall, erect stems with large, pale sky blue, lavender to pale rose flowers. It is native of the eastern Great Plains (USA) and Mexico. For any rich, well drained, preferably slightly rocky soil in full sun. VI-VIII. |
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Penstemon buckleyi (Buckley's Beardtongue)50 (70)cm, Buckley's Beardtongue is a stunning and tall species with bluish-green leaves and pale lavender-blue flowers. For any rich, well drained soil in a sunny spot. An excellent plant for the rock garden. Seeds from a certified wild collection in Chaves County, New Mexico, USA, at some 1.250m. VI-VIII. |
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Penstemon caesius (San Bernardino Beardtongue)25 (35)cm, San Bernardino Beardtongue has showy bluish-green leaves and rich bluish-purple flowers. Seeds from a certified wild collection in Tulare County, California, USA at some 2.750m. For any rich, well drained soil in a sunny spot. VI-VIII. |
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Penstemon calycosus (Calico Beardtongue)40 (70)cm, Calico Beardtongue makes lavender blue trumpet flowers in tall terminal racemes. This species is native to sunny spots in open woodlands and moist meadows in the eastern US. It is easily grown in any rich, well drained. slightly moist soil in a sunny to partially shaded spot. V-VI. |
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Penstemon cardinalis (Cardinal Beardtongue)50cm, Cardinal Beardtongue an utmost ornamental species with bright scarlet flower tubes on a tall raceme above mid green leaves. From the White Mountains of New Mexico County. Seeds from a certified wild collection in Lincoln County, New Mexico, USA at some 2.350m. For any rich, well drained soil in a sunny spot. VI-VIII. |
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Penstemon cardinalis ssp. regalis (Royal Red Penstemon)60 (90)cm, Royal Red Penstemon is an utmost showy species from open spots in pine woods and canyons in New Mexico and Utha, USA. It bears bright red nodding flower tubes and broader leaves than the type species cardinalis. For any rich, well drained soil in a sunny spot. An excellent plant for the rock garden. Seeds from a certified wild collection in Eddy County, New Mexico, USA, at some 1.350m. V-VIII. |
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Penstemon cardwellii (Cardwell's Beardtongue) |
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Penstemon carnosus (Fleshy Beardtongue)40cm, Fleshy Beardtongue has somewhat succulent, bluish-green leaves and showy rich lavender-blue to lavender-rose flowers. For any rich, very well drained and preferably rocky to sandy soil in full sun. An excellent plant for the rock garden. Seeds from a certified wild collection in Emery County, Utah, USA, at some 2.200m. VI-VIII. |
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Penstemon caryi (Cary's Beardtongue)20cm, Cary's Beardtongue is a local endemic Penstemon species from Bighorn and Pryor mountains (north central Wyoming and south central Montana, USA). It is a smaller species with narrow leaves and pale blue flowers. For any rich, well drained soil in a sunny spot. An excellent plant for the rock garden. Seeds from a certified wild collection in Sheridan County, Wyoming, USA, at some 2.800m. VI-VIII. |
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Penstemon centranthifolius (Scarlet Bugler)60 (100)cm, Scarlet Bugler is a taller Penstemon species which makes several racemes with utmost showy bright scarlet flowers above nicely contrasting greyish-green leaves. It is native in dryish rocky sites from California (USA) to Mexico. For any rich, very well drained soil in full sun. Excellent in a protected spot in the rock garden. VI-VIII. |
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Penstemon clevelandii var. connatus (San Jacinto Beardtongue)40cm, San Jacinto Beardtongue is an utmost colorful species with bluish-green leaves and bright magenta flowers. A first choice Penstemon species from sandy soils. For any rich, very well drained and preferably rocky to sandy soil in full sun. An excellent plant for the rock garden. Seeds from a certified wild collection in Riverside County, California, USA, at some 1.600m. VI-VIII. |
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Penstemon cobaea (Showy Beardtongue)25 (50)cm, Showy Beardtongue makes showy intense violet to pale rose-purple flowers in dense terminal racemes above glossy, serrated leaves. This short-lived perennial is native of sunny meadows in the central and southern states of the USA (Oklahoma, Kansas, Texas, and Nebraska to Missouri). It is easily grown in any rich, well drained soil in a sunny spot. V-VI. |
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