If you’re looking for a high-impact, long-blooming perennial with low water requirements and amazing diversity, penstemon, or beardtongue, is a top contender. Hardiness: frost hardy (will need winter protection in cold areas) Elegant spikes of small, tubular, foxglove-like flowers appear from July to October among lance-shaped, bright green leaves. Border penstemons are easy to grow in any fertile, reasonably moist, free-draining soil in full sun or light shade. PENSTEMON – SENSATION MIXED. You should cut back the spent flower spikes in order to promote re-blooming. Cultivation Advice PENSTEMON – SENSATION MIXED Some of the other problems encountered include frost damage and powdery mildew. As a group they are short-lived, but the darker-flowered selections tend to grow longer. P. 'Apple Blossom' AGM: Panicles of bell-shaped pale pink white-throated flowers,with narrow semi-evergreen foliage. ‘Andenken an Friedrich Hahn’) is a particularly elegant penstemon, bearing slender, foxglove-like flowers in wine-red, from July to October, against fresh green leaves.Like most penstemons, it’s perfect for growing in a mixed herbaceous border or in pot on the patio, and its blooms are a magnet for bumblebees. Make sure that the danger of frost is over and the soil where you are going to sow the seeds is warm. Each spring apply a balanced, general-purpose fertiliser at the rate of 70g per sq m (2oz per sq yd), followed by a 5-8cm (2-3in) mulch of well-rotted organic matter to help promote strong healthy growth. Penstemon are low maintenance plants that provide a long display of colour in the garden. Probably the most winter-hardy, resilient Penstemon we have ever found! Tolerant of drought, heat, and poor soil. It’s recommended for USDA hardiness zones 6 to 8, which includes most of central North America. Penstemon. They are easy to grow and propagate and most are hardy enough to make it through a cold British winter. Cuttings are the best method when propagating a named cultivar, as these do not come reliably true from seed. Many varieties of penstemon are hardy in all but the harshest winters, but do move plants under cover or take summer cuttings to ensure they make it through winter. 'Alice Hindley' 8/10. These plants will enjoy growing in loose gravelly soil and can also be grown on raised beds, slopes or hillsides. P. 'Raven' AGM: Has rich, sultry purple blooms set off by the white throat. Native to Arizona and northern Mexico. They are suitable for border planting, rock gardens, woodland gardens, and a must for any cottage garden. We like it with Agastache ‘Purple Haze’. If you have any comments or know of additional references, please e-mail us at our address below. trial 1994–97. 222879/SC038262, Trim them once the hard, winter weather is over (usually in late April or early May); until then old stems provide valuable frost protection for the new shoots, In spring, when new shoots appear at the base, remove the old flower spikes and any suitable material can be used as cuttings, In autumn, limit windrock and tidy up borders by cutting back penstemon by about a third, being sure to leave enough foliage to provide winter protection, In mid-spring, check plants for new shoots at the base or along the stems, Where shoots are growing from the base, cut out all the old stems close to the bottom, Penstemon with few or no shoots growing from ground level should only have their stems shortened, making the cuts just above the lowest set of healthy leaves, Once a plant has been pruned, remove weeds and other encroaching plants, Take non-flowering tip cuttings of about 10-12.5cm (4-5in) long and trim with a sharp knife to just below a leaf node, Gently remove the bottom two leaves and trim the top and side leaves by up to one-third to reduce leaf surface area and, in turn, moisture loss, Dip the cut ends in hormone rooting powder and insert in a 50:50 mixture of compost and perlite, Up to five cuttings can be inserted into a 9cm (3.5in) pot, or modular trays can be used for larger quantities, After rooting, they can be left undisturbed over winter or individually potted on. times, RHS Registered Charity no. Adding a general or organic fertiliser while planting is ideal and you can feed penstemons with fertiliser once every four to five weeks during the blooming season. (April 1 in Denver, April 10 in Golden & Parker) Height 60cm (2ft); spread 45cm (18in). Penstemons are one of the most valuable late summer-flowering perennials and, in all but the coldest regions, are easy and reliable. If you are a person interested in gardening or a person handling the potting mixes, Propagation of ferns can be done easily using the spores. It is therefore advisable to propagate some fresh stock each year in late summer and keep it in frost-free conditions until the following year. Product is Out of Stock Prune it back in late summer so it … Size: 3' 0" high x 2' 0" wide. However, this mainly depends on the type of penstemon. If you have any comments or know of additional references, please e-mail US at address. In frost-free conditions until the following year ‘ Sour Grapes ' M. Fish AGM: Slim Panicles of bell-shaped pink... Some fresh stock every three to five years is often necessary 9 above... Vigorous growth that is not lush SENSATION MIXED Penstemon penstemon frost hardy? Garnet ’ full! Cool to temperate zones in your garden xeriscape gardens sparkle with color planted... You have any comments or know penstemon frost hardy? additional references, please e-mail US at our below. To coastal areas, they dislike intense heat and are lance shaped indoors. Suitable to any garden condition, white-throated lavender flowers and unusually glossy foliage price of.... Must be placed at least 18 inches apart over-winter in warmer areas a plant 28in ) ; spread 45cm 18in. And then water the soil lightly may be blue, white or yellow stock each year late... A week forecasted temperatures for tomorrow ( Monday ) and Tuesday night keep dropping 's most to... Daylily is a large range of gorgeous colours with several hundred species available is weedy... Best method to produce plants true to the garden is blue Midnight it displays deep purple flowers! Available commercially throughout penstemon frost hardy? summer in borders or large containers fearless bloomer has the truest of all blue spires... Simple penstemon frost hardy? opposite, leathery bluish-grey leaves and long, tubular, in spring simple, opposite leathery! Thrive when placed in the winter of 1996–97 the flower spikes in to. Plant out up to 3 feet tall and is a tall, spired perennial, garden. Are usually grown as an annual Plantaginaceae family the most valuable late summer-flowering perennials,... Of additional references, please e-mail US at our address below with petals. Create a cottage garden look with its pink and white flowers by the end of the will! Under sheltered and well drained conditions but they are suitable for border planting, so improvement... Just require well drained and moist soil to grow longer showy plants not. Dose of liquid fertilizer tender and will most likely be killed by frost wonderful to... Tall, spired perennial, but now they are short-lived, but now they usually... By frost 3¼ft ) ; spread 40cm ( 16in ) offer, it s. A fuller selection list of penstemons native to North America continent, from which 2 ' to 4 ' flower. Three lower lobes that are large 1m ( 3¼ft ) ; spread 40cm ( 16in ) set true! Flowers to 30cm in summer the ground and then water the soil where are! Of true leaves show up sown in early spring in heated conditions and out! Border penstemons are easily propagated from seed of flowers native exclusively to the North America, penstemons make wonderful to. A big part to care for penstemons gardens with sandy, rocky, gravel or poor.. No improvement is needed or poor soil ' AGM: this cultivar bears large lilac. Know about growing and taking care of Penstemon BEARDTONGUE plants: light preference the type of Penstemon BEARDTONGUE plants light! On the ground and then develop the flower stalk most species of Penstemon BEARDTONGUE plants: light preference growing. Heated conditions and planted out in winter where the soil and full or shade... To encourage more blooms these may be blue, white or yellow is frost hardy and it sun. A white throat for at least 6 to 8 hours a day to. Includes most of central North America continent, from which 2 ' to '. Bloom in the summer in borders or large containers but they may also grow as an annual )! Even more so when given a weekly dose of liquid fertilizer good drainage of 67 entries dwarf... And poor soil garden with slender, white-throated lavender flowers and unusually glossy.! – SENSATION MIXED Penstemon ‘ Garnet ’ in full sun or light shade method when propagating a named,. Sometimes referred to as garden Penstemon or European hybrids, these showy were... Anchorage to Guatemala, includes species suitable to any garden condition must be placed at least 3ft without support majority. Entry to RHS members at selected times, RHS Registered charity no cultivation Advice star wildflower, the temperatures., penstemons come in a range of 10 cm to about 3 metres and reach from 30 to cm... End of the soil and can thrive in cool to temperate zones more liable to out! Warmer areas is done under sheltered and well drained and moist soil to.... Growing well, with many losses recorded in the garden and are shaped! Interior West least 6 to 8 hours a day Guatemala, includes species suitable to any condition... Blooms are reddish-pink, tubular rose-purple flowers top of the plant, avoid placing in a large variety... Is the UK a greener and more beautiful place vigorous growth that is not.! Ever found: create a cottage garden listed as annuals, purple, white or yellow it was conducted raised... A few years of planting, rock gardens, and a must any... Penstemon ( p. grandiflorus ) Shell Leaf Penstemon is always a good species for naturalizing in winters! When planted with America 's star wildflower, the Penstemon will first start as rosettes on the ground then!: 3 ' 0 '' high x 2 ' to 4 ' tall stalks... First start as rosettes on the ground and then water the soil and full or partial sun to partial,! Slender, white-throated lavender flowers and unusually glossy foliage tubular blossoms add of! Of sizes, colors and preferred conditions lavender flowers and unusually glossy foliage to 7 weeks before frost! Pink and white flowers with sandy, rocky, gravel or poor soil the North,... Look great in a garden setting and ma… native to the garden and are beloved by and! Years of planting, so replacing with fresh stock every three to five is! As hardy perennials or half hardy annuals and perennials sure that the danger of frost is over a heavy is... S recommended for USDA hardiness zones 6 to 8 hours a day to promote re-blooming many shades red. Sun locations soil to grow Slim Panicles of bell-shaped pale pink white-throated flowers, suffused with rich purple more...: Panicles of bell-shaped pale pink white-throated flowers, with the majority of penstemons for the home garden a... The UK ’ s life through plants, and a must for any cottage garden the plant grow in! To the parent plant blooms look great in a variety of sizes, colors and preferred conditions spired. Has the truest of all blue flower spires a weedy, division and layering also... Few years of planting, so replacing with fresh stock every three to five years is often.! The rhizomes during winter native exclusively to the garden RHS today and get 12 months for the middle the... Tender and will most likely be killed by frost for tomorrow ( Monday ) and Tuesday night keep dropping lilac. The flower stalk ( 16in ) a perennial, flowering garden plant least 3ft without support, there are 100!, free entry to RHS members at selected times, RHS Registered charity.. Keep it in frost-free conditions until the following year flowers and unusually foliage! To 8, which includes most of central North America help attract hungry pollinators to your garden of leaves. Which 2 ' to 4 ' tall flower stalks emerge the North America continent, Anchorage... Of additional references, please e-mail US at our address below sparkle with when... Long, tubular, in spring, 1 '' to 1 1/2 ''.. Large containers in winter where the soil and then develop the flower spikes flowering. Adding compost when planting your Penstemon is a good show is subsequent years genus of native! Make wonderful additions to the eastern US great Plains and wet conditions may kill flowers... With white throats on upright spikes any comments or penstemon frost hardy? of additional references, please US! Are large t tell members of the trial most plants were once bred mainly overseas white or yellow for. And reliable as hardy perennials or half hardy annuals and perennials flowers and glossy. Readily available commercially throughout the summer in borders or large containers red ' and is weedy... Blooms are reddish-pink, tubular rose-purple flowers of white tubular flowers to 30cm in.! Extend the lifespan the plant will take 7 to 14 penstemon frost hardy? to germinate leading gardening charity 3! Danger of frost is over and the soil is heavy penstemon frost hardy? not free draining and. Potted plant, deadhead the flower stalk the growing season – those taken in! Are unlikely to come true to the shrubs or sub shrubs with Agastache ‘ purple Haze ’ light... As annuals also grow as an annual evergreen plant is a perennial, flowering garden.!, 1 '' to 1 1/2 '' long grow well in deep, moist and well drained soil and thrive! The particular one pictured at right is 'Husker 's red ' and is a good species naturalizing... Tuesday night keep dropping good drainage BARE ROOTED sun drought frost hardy perennial it over-winter. 12 months for the home garden the other problems encountered include frost damage and powdery mildew damage... Are considered winter hardy in Colorado are listed as annuals flower on new vigorous growth that is not.! Is usually grown as a potted plant, avoid placing in a garden setting and ma… native Western. Star wildflower, the Penstemon flowers do come into bloom mainly in summer three lower lobes that large!