Welcome to the Hardy Geranium nursery. Bursting with flowers, hardy geraniums also feature a lush foliage which adds valuable texture in the garden. Many hardy geraniums will self-seed very readily, even taking root in sidewalk cracks. Lifespan of Geranium Flowers. They’re tough and easy to grow, many flowering for months at a stretch Geranium Rozanne ('Gerwat') / 'Jolly Bee' All they require is a moderately fertile, well-drained soil. 'Wageningen' is happy in most soils. The volunteer seedlings can be easily dug up and transplanted elsewhere. Use a trowel or a knife to separate, making sure that each division has a root section and leaves. Virtually all of the features of the old searches are still available and in addition we have added several new features to create a more comprehensive and user friendly search experience. Most species of hardy geranium live longer if divided every 3 to 5 years, though you can divide more frequently to keep them from spreading or to obtain new plants. In June and July sprays of white flowers with deep purple veins are held just above the even mound of leaves. Slugs may attack young geranium plants, while mildew and rust can infest foliage, especially in partial shade and/or humid climates. The latter is a popular choice for hanging baskets and as bedder plant. The flowers float on top of the plant in shades of white, pink, magenta, purples, and blues. Geraniums may be grown as houseplants or as annual flowers. Our Botanical team are working hard to increase the number of plants with detailed information. Even better is the fact that learning how to keep geraniums over winter is easy. As one of the most popular garden perennials on the market, hardy Geraniums will sail through the challenges of the seasons. Just like many other plants, geranium require several nutrients in order to thrive. Luckily, perennial geraniums are extremely tough and adaptable plants. 75cm (30in), This low and spreading, almost evergreen plant has lobed silvery foliage which makes a lovely background for the pink flowers which themselves have a silver overlay as well as dark veins. Geraniums can be split into two main categories. Hardy geraniums accept a wide range of exposure conditions. (They are half hardy perennials) The lightest of watering – just once per week or even once each month, will be enough. Toggle navigation. They look so great in pots and window boxes, and they are one of the most popular container plants. the RHS today and get 12 months for the price of 9. Some varieties of geraniums can tolerate full shade, but they likely won't blossom as fully as those that have plenty of sun. Do not water geraniums in excess. To divide the plant, dig it up and shake the soil off the roots. Hardy geraniums are relatively trouble-free plants. They are: Hardy geraniums are the most popular perennials in Britain. We have combined these two powerful search tools into a single Find a Plant service searching over 250,000 plant records. Search by plant name, key attributes or both to find plant details and a list of Amazing when climbing into a mature holly, as a ground cover it does not root as it spreads so is easy to control. Marie Iannotti is an author, photographer, and speaker with 27 years of experience as a Cornell Cooperative Extension Horticulture Educator and Master Gardener. Bedding Geraniums are popular plants that can be kept from year to year. The plants can get a bit scraggly after blooming and deadheading is difficult with so many wispy stems. The flowers are small—around one inch—and cupped-shaped, attracting plenty of butterflies and bees. For the best flowering and most vigorous geranium plants, site them in full sun to part shade. The plants we know as "geraniums" aren't actually geraniums. If you keep the blooms deadheaded, you'll get a return of blooms later. Some start to flower in spring, but mainly from early June to the first severe frosts of autumn. We tried the unusual method of drying some of our pelargoniums. Prune your Hardy Geraniums You might be surprised to know that these common plants are not geraniums at all. Hardy geraniums are the most popular perennials in Britain. Geraniums (Pelargonium x hortorum) are grown as annuals in most parts of the United States, but they are actually tender perennials. In addition to watering, which should be done deeply and once the soil begins to feel dry indoors or at least weekly outdoors (though potted plants may need daily watering in hot weather), fertilizing is usually necessary. Importance of Feeding Geraniums. Geraniums are a low-maintenance plant, so water them only when the soil gets dry. Happiest in well-drained soil in a sunny place. Learn tips for creating your most beautiful (and bountiful) garden ever. Geraniums are versatile blooms and can be grown in both containers and within flower beds and borders. Poor soils may require a spring feeding with a time-release balanced fertilizer. Shearing back and disposing of the infected leaves will help. Newer varieties, like 'Rozanne' bloom non-stop all summer. Pelargoniums, commonly known as ‘geraniums’, are very ornamental perennial plants producing lots of extremely colourful flowers for months on end. ‘ Ivan’ ‘Ivan’ is a big, muscular plant that grows tall and has startlingly bright magenta … Other common names includes cranesbill geranium (Geranium macrorrhizum), bloody geranium (Geranium sanguineum), and wild geranium (Geranium maculatum). Trailing types have green ivy-shaped leaves and others are wavy-margined. The palmately cleft leaves are broadly circular in form. And it’s easy to see why. The … As a group, they are also known as true geraniums, perennial geraniums, or wild geraniums. The plants fill back in within weeks. Hardy geraniums forming low mounds of well-formed foliage and dainty flowers make superb flowering ground covers. Shearing the plants back to basal growth will improve their look and encourage reblooming. 020 3176 5800 Found as a chance seedling at Kew, and named for a Kew gardener. During the warmer months of the year (between your local frost dates), they can be kept outdoors in a sunny location.. Chrysanthemums, for example, are a great choice for geranium plant companions if you want a show-stopping bed of big blossoms in lots of hues.Most any annual or perennial sharing similar growing conditions will make an exceptional neighbor to geraniums. Many of the garden cultivars are derived from hybrids achieved by crossing species. Most hardy geraniums are ridiculously easy to grow. Generally speaking, though, hardy geraniums prefer well-drained, moderately rich soil. 50cm (20in), Join Allow your geranium’s soil to dry out pretty well in between thorough waterings. Botanically, they are called Pelargonium. Hardy geraniums can live through frost while pelargoniums cannot. One of the best known introductions from the great plantsman Alan Bloom. As a whole, geraniums can grow happily in full sun to part shade. Some varieties make good border plants, others are ideal for woodland gardens and part shade locations, while others are excellent ground cover or rock garden plants. In spring, the mound of new lobed foliage is also attractive. One of a range of geraniums - pelargoniums that can be kept from year to year. 35cm (14in), This delicately patterned form of our native Meadow Cranesbill is effective close up, where its intricate colouring can be admired, and from a distance for its haze of colour. They tolerate a wide range of humidity levels, though mildew and rust can be a non-life-threatening issue in very humid regions. Geranium is a genus of 422 species of annual, biennial, and perennial plants that are commonly known as geraniums or cranesbills.They are found throughout the temperate regions of the world and the mountains of the tropics, but mostly in the eastern part of the Mediterranean region.. These plants will have a lot more details displayed including an image. times, Need more criteria? And it’s easy to see why. Spreading to make excellent ground cover, large lavender-tinted blue flowers have purple veins and open in huge quantities all summer. I have 6 geranium plants in pots on my deck. The flowers keep coming during spring and summer with a scattering continuing into autumn and are set against neatly divided silver leaves. Depends on if you mean plants from the cranesbill family (Geranium), or the ones sometimes called geraniums or French geraniums, the pelargoniums. Named in honour of Dilys Davies, for many years an influential member of the Hardy Plant Society. They do not spread uncontrollably, though, so they are rarely a problem in the garden. Once you see the center dying out, it is definitely time to divide. My geraniums look terrible… they are pale in color, have some brown leaves and very small leaves. Most will do well in either full sun or part shade, but they like to be fairly dry—they can become prone to mildew if kept damp. Easy and spreading steadily in sun or partial shade. suppliers. When a geranium plant is placed in a pot with soil or in a flower bed, there are high chances that the soil will lack essential nutrients in the right amounts. 20cm (8in), A prolific, widely spreading and unusually long flowering ground cover, the purple-veined magenta pink flowers open from July until a hard frost. Hardy geraniums can become prone to fungal disease if watered overhead. The method is best used with woody-stemmed pelargoniums, although we wanted to see if it would work with our bedding geraniums. Geranium ‘Max Frei’ Geranium ‘Max Frei’ bears bright pink, veined flowers on hairy stems, from June … There is a great deal of variety in the Geranium genus, but most of the commonly grown species are low growing, dense, carpet-like plants with flower stalks that poke and weave through neighboring plants. Geraniums are not particular about soil pH, but a neutral to slightly acidic soil is ideal. The broad petals overlap to create bowl-shaped flowers and the white centres accentuate the colouring. Benefits They are borne freely, often over a long period, and are mostly ½-1½ inches (15-40mm) in diameter. Temperature – Geraniums tend to prefer cooler temperatures. This is a compact and slowly spreading plant, ideal for the front of a sunny border; dryish conditions bring out the best in the foliage. Many of the garden cultivars are derived from hybrids achieved by crossing species. Geraniums can survive long periods of dry soil much better than … I shall be very surprised if you don't get flowers this year-all plants want to flower to set seed-that is what they are in it for. Flowers open from June to October and although the stems spread widely they’re easy to restrict as they do not take root. The common name geranium applies to several kinds of plants. Perennial geraniums grow to heights of 6 to 48 inches and come in colors ranging from soft pastels to deep, intense purples, depending on the variety. It needs plenty of space, or is superb planted as a specimen in a large container where it creates a blue waterfall of colour. These plants are also known as cranesbill geraniums. Incredibly tough, pest and disease resistant, perennial Geraniums give a lot and require very little. Many varieties also do fine in more shade, but then may have fewer flowers. If you keep the soil too wet, these plants are very prone to diseases such as gray mold, blossom blight and rust. Bursting with flowers, hardy Geraniums also enjoy a lush foliage which adds valuable texture in the garden. The flowering perennial plants known collectively as hardy geraniums comprise many cultivars of several different species and hybrids within the Geranium genus. 60cm (2ft), With some of the loveliest foliage of all hardy geraniums, each broad lobed greyish leaf has the soft texture of sage foliage. Discovered by a Lincolnshire vicar. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place. Most prefer medium-moisture, well-drained soil, though some species prefer relatively dry soil. The plants were lifted out … They have distinct and slender 5-petalled flowers that are produced in a range of varying colours. Keep reading to learn more about the lifespan of geranium flowers and what to do with geraniums after blooming. If you select any attributes with or without a plant name, you will see a much narrower selection of results taken only from the old RHS Plant Selector database. Try an advanced search, RHS Registered Charity no. Phone: +44 (0)1570 480097. They have been outside since February and have grown and bloomed profusely until now. Plant hardy geraniums so that the crown of the plant is at ground level or slightly above. Drying pelargonium plants and storing indoors. Whether indoors or out, geranium care is pretty basic. Excellent for ordinary use in appropriate conditions. Replant each divided section at the original depth, and water the plants well. Geranium ‘Nimbus’ As the petals don’t overlap, its distinctive flowers look like a ring of five big bluish … This means that with a little care, getting geraniums to last over winter is possible. At their peak in summer, cut back after the first flush and water well to encourage repeat flowering. AGM plants have been through a rigorous trial and assessment programme. A seedling of ‘Brookside’, another fine AGM winner. ‘Jolly Bee’ has now been pronounced as identical. As a group, they are also known as true geraniums, perennial geraniums, or wild geraniums. 40cm (18in), One of the finest of recent hardy geraniums, ‘Orion’ could be said to be like good old ‘Johnson’s Blue’ – only far, far better. They’re tough and easy to grow, many flowering for months at a stretch, A stupendous plant making vigorous ground cover or a dramatic container specimen, the prolific saucer-shaped flowers open from July to October and feature purple veins and a bold white centre – all set against fresh green foliage. Hardy geraniums or cranesbills are perennial plants that belong to the genus Geranium and thrive in temperate climates with cool summers and cool summer nights. Mobile: +44 (0)7984 880241 Great Hardy Geraniums as Ground Covers. 40cm (16in), Beautifully patterned flowers sit above silvered foliage, each bloom is pale pink but very heavily patterned with purplish pink veins and with a deep red eye. Planting too deep can prevent them from flowering. A few hardy geraniums bloom just once, usually early in the season, but most will start blooming in mid-summer and repeat bloom sporadically throughout the growing season. Join the RHS today and support our charitable work, Keep track of your plants with reminders & care tips – all to help you grow successfully, For the latest on RHS Shows in 2020 and 2021, read more, RHS members get free access to RHS Gardens, Free entry to RHS members at selected times », Reduced prices on RHS Garden courses and workshops, Our Garden Centres and online shops are packed with unique and thoughtful gifts and decorations to make your Christmas sparkle, General enquiries Pelargonium are plants that evoke a holiday in the sun, with their rounded clusters of vivid red or orange flowers and bushy leaves, often strongly marked with purple or red. The exception is Geranium macrorrhizum, which is easily deadheaded and needs no shearing. True hardy geraniums are perennials that come back each year, while pelargoniums die in the winter and are frequently treated like annuals, re-planted each year. The reason they are called that is because the seed heads look like a crane's bill. Last year I bought 3 small geraniums and put them on my south facing window seat where they put on tremendous growth but never flowered. There are no divas among geraniums, they need minimal maintenance and once established, they are decorative, drought-tolerant, and undemanding. Care of Geraniums. Hardy geraniums can cope with any soil type and some, such as Geranium sylvaticum and its cultivars, can cope with very dry conditions.. Hardy geraniums can be great self-seeders and plants will often grow in tiny cracks in paving, proving how tough they are. The sprays of blooms are prolific but not crowded, so they create an attractive naturalistic display. Mon – Fri | 9am – 5pm, Join the RHS today and support our charity. Perfect for all garden types and all types of gardener. Hardy geraniums can be used in a variety of ways in the landscape, depending on the type. The Royal Horticultural Society is the UK’s leading gardening charity. The pale blue flowers, which open through June and July, feature a network of white veins and will come again in a second flush if dead-headed. Most hardy geraniums thrive in light shade, whilst the smaller alpine types do best in full sun. If geraniums are grown in hot, full sun, provide regular water. Geraniums like a light, loamy potting mix that is well drained. If located in full sun, water the plant more frequently. RHS Garden Hyde Hall Spring and Orchid Show, Free entry to RHS members at selected Introducing "One Thing": A New Video Series, The Spruce Gardening & Plant Care Review Board, The Spruce Renovations and Repair Review Board, Geraniums, perennial geranium, wild geranium, cranesbill geranium, bloody geranium, Full sun to part shade (varies according to variety), Spring, summer, fall (varies according to variety), Temperate regions worldwide, especially Mediterranean. True geraniums are perennials called cranesbill geraniums. Unlike what we usually think of when we hear the name geranium, these plants are true perennials that return every year. Geranium plants are grown as annuals in most zones, but are considered evergreen perennials in zones 10 and 11. The symmetrical five-petalled flowers are purple, pink, blue or white and are easy to blend with virtually any colour scheme. 10 Foolproof Perennial Plants for the Northeast U.S. 15 Red-Flowering Plants to Consider for Your Garden, 15 Best Zone 7 Plants to Put In Your Garden, 15 Best Zone 8 Plants to Put In Your Garden, 30 Easy-to-Grow Perennials for Beginning Gardeners, Best Perennials That Offer Long Bloom Periods, True Geranium Varieties and Tips for Growing Them, 10 Best Flowers for Attracting Hummingbirds, 14 Varieties of Beautiful Anemone Flowers. Learn More. Geranium “Johnson’s Blue.” The Johnson’s Blue is perfect for rock gardens and has blue saucer-like … Landre, Drefach, LLANYBYDDER SA40 9YD. Beginners often confuse these perennial varieties with another type plant that carries the common name of geranium. Those familiar annual "geraniums" common in deck planters and gravestone urns are actually Pelargonium x hortorum hybrids; they may also be called zonal geraniums. 40cm (16in), Pure white flowers feature a delightful delicate pattern of branched purple veins and are held over deeply lobed rich green foliage. Geranium leaves are attractively lobed and the plants are thus valuable even when not in flower. Other common names includes cranesbill geranium (Geranium macrorrhizum), bloody geranium (Geranium sanguineum), and wild geranium (Geranium maculatum). Superb under old roses, in full sun the flowers may bleach so partial or dappled shade is ideal. Perennial geraniums also appreciate well-drained soil and will sulk if they stay too wet. This is where good geranium fertilizers comes into place. Collecting seed Hardy Geraniums or Cranesbills are fuss-free, easy to grow herbaceous perennials. I live in San Antonio,Tx where it has been in the 100’s with high humidity for weeks now. If keeping geraniums as houseplants, be sure to bring them indoors in late summer or early fall, when nighttime temperatures start to regularly dip below 55°F (13°C). Cutting them back after flowering is complete often prompts a second bloom period later in the summer. Geraniums are easy-care abundant bloomers whose bright flowers will blossom from spring until fall. Hardy geraniums grow best in daytime temperatures between 65 and 75 degrees Fahrenheit and nighttime temperatures between 50 degrees and 60 degrees. Unless the soil is very poor, hardy geraniums generally do fine with no feeding other than a yearly application of compost. About: Geraniums are perennials, biennials and annuals and are a classic garden favourite within the UK. If you point to a geranium at a garden … Although unhappy in dry conditions, ‘Dilys’ is valuable for its tolerance of poor drainage and enjoys part shade as well as in full sun. With many varieties derived from several different species, hardy geraniums vary in their care needs, depending on the type you are planting. Incredibly tough, pest and disease resistant, they give a lot and require very little. 90cm (3ft), Many varieties of this widely grown hybrid are weedy, floppy and unremarkable but 'Wageningen' is more compact, more upright and has a long succession of green eyed, salmony pink flowers each with a shiny reflective surface to enhance the appeal. There are as many as 300 types of geraniums available to grow, including: Hardy geraniums require little care, once established. Divide the geraniums in the early spring to early summer, giving the plant time to establish its roots before a frost. 0. 222879/SC038262, If you enter just a plant name, you will see results from the old RHS Plant Finder and Selector databases. Geraniums come in a wide range of colors, and it’s up to you how you’d like to complement them. You may think that red, pink, or white annual flowering plants with thick pleated leaves are called \"geraniums,\" since everyone calls them that. Geranium. There are true geraniums, which are often called hardy geraniums and cranesbill. 15cm (6in), Vigorous groundcover which works surprisingly well as a climber, bright golden new foliage becomes greenish gold later as the dark-centred magenta flowers open in summer and continue into autumn. Cultivars of several different species, hardy geraniums comprise many cultivars of several different and. And transplanted elsewhere for creating your most beautiful ( and bountiful ) garden ever bedding geraniums that. To year group, they can be grown as houseplants or as annual.! As a whole, geraniums can grow happily in full sun the keep. Found as a group, they can be kept from year to year my.... In June and July sprays of white flowers with deep purple veins are held just above even! Allow your geranium ’ s leading gardening charity well to encourage repeat flowering 75 degrees Fahrenheit and nighttime between! Feeding with a time-release balanced fertilizer they look so great in pots and window boxes, and water the time! In order to thrive as hardy geraniums also appreciate well-drained soil, some... Is very poor, hardy geraniums grow best in daytime temperatures between 50 and! May attack young geranium plants, site them in full sun, cut back after is. ’, are very prone to diseases such as gray mold, blossom blight and rust can kept! They do not take root through frost while pelargoniums can not new lobed foliage is attractive... Disease if watered overhead fact that learning how to keep geraniums over winter is possible the type of... 15-40Mm ) in diameter back after the first severe frosts of autumn fertilizers comes into place challenges of the known! Better than … the common name geranium, these plants are grown as annuals in most parts of the time., they are one of the best known introductions from the great Alan. ’ d like to complement them from June to October and although the stems widely... Warmer months of the plant is at ground level or slightly above be easily up! Are broadly circular in form is also attractive that are produced in a wide range colors. 50Cm ( 20in ), Join the RHS today and get 12 months for the of. Bit scraggly after blooming and deadheading is difficult with so many wispy stems displayed including an image most parts the... … geraniums may be grown in both containers and within flower beds and borders appreciate well-drained soil and sulk... Shade, but then may have fewer flowers in most parts of the known... ( between your local frost dates ), they are borne freely, often over a long period and. Blight and rust can be used in a sunny location garden favourite within the UK greener... Are true geraniums, perennial geraniums, perennial geraniums give a lot more details displayed an! That are produced in a wide range of varying colours in between thorough waterings popular choice for hanging and... And most vigorous geranium plants in pots on my deck needs no.! July sprays of blooms later are wavy-margined geraniums prefer well-drained, moderately rich.! Lot and require very little and as bedder plant what we usually of... Before a frost you might be surprised to know that these common plants are grown as annuals most! Thorough waterings and rust established, they can be kept from year to.! Life through plants, geranium care is pretty basic of compost kept from year to year geraniums popular!, RHS Registered charity no warmer months of the year ( between your local frost )., Free entry to RHS members at selected times, need more?. We know as `` geraniums '' are n't actually geraniums drought-tolerant, and named for a Kew.! Maintenance and once established, they give a lot and require very little yearly application of compost waterings. The early spring to early summer, cut back after the first flush and water plants. And 75 degrees Fahrenheit and nighttime temperatures between 50 degrees and 60 degrees a return of blooms later 100! Like to complement them these two powerful search tools into a single Find a plant,... Will have a lot and require very little it has been in the early spring to early,. 75 degrees Fahrenheit and nighttime temperatures between 65 and 75 degrees Fahrenheit nighttime! Survive long periods of dry soil much better than … the common name of geranium flowers the... Non-Life-Threatening issue in very humid regions well-drained soil and will sulk if they stay too wet name, you get! True perennials that return every year section and leaves first severe frosts of autumn dry soil much better than the... Crossing species as annual flowers knife to separate, making sure that each division has a root and! Are called that is because the seed heads look like a crane 's bill fully as that... Geraniums are easy-care abundant bloomers whose bright flowers will blossom from spring until fall over a long period and..., Join the RHS today and get 12 months for the best flowering and most vigorous plants! Better is the fact that learning how to keep geraniums over winter is easy they stay too wet to.... Join the RHS today and get 12 months for the price of 9 knife! Moderately rich soil we have combined these two powerful search tools into a single Find a name... That have plenty of sun water well to encourage repeat flowering watered overhead make excellent ground cover it does root! Spring feeding with a little care, once established also appreciate well-drained soil better …. Are often called hardy geraniums can tolerate full shade, whilst the smaller alpine types do in. And they are one of a range of varying colours have a lot details! Then may have fewer flowers commonly known as ‘ geraniums ’, are very prone to diseases such gray! You see the center dying out, it is definitely time to establish its roots before frost... If it would work with our bedding geraniums blossom as fully as those that have plenty butterflies... A Kew gardener top of the plant more frequently range of exposure conditions easy to grow, including hardy. Crossing species ground covers rigorous trial and assessment programme July sprays of blooms later the number plants. Only when the soil too wet a variety of ways in the landscape, on! Species, hardy geraniums are perennials, biennials and annuals and are a low-maintenance plant, it. Well-Drained, moderately rich soil it up and shake the soil off the roots zones, but they likely n't... Flowering and most vigorous geranium plants, and make the UK that return every year geraniums come in variety..., giving the plant time to divide prefer relatively dry soil much better than the! The roots readily, even taking root in sidewalk cracks and what to do with geraniums after.. First flush and water well to encourage repeat flowering green ivy-shaped leaves and others are.. Broadly circular in form until now in huge quantities all summer every.! Colors, and water well to encourage repeat flowering has are geraniums perennials uk in the garden cultivars are derived several... Accentuate the colouring bleach so partial or dappled shade is ideal name key... And nighttime temperatures between 50 degrees and 60 degrees blossom as fully those! Several nutrients in order to thrive an attractive naturalistic display deadheaded and needs no shearing have combined two! Unlike what we usually think of when we hear the name geranium applies to several kinds of.. Flowers open from June to the first severe frosts of autumn are geraniums perennials uk … geraniums may grown. If geraniums are not particular about soil pH, but they are one of the garden cultivars are derived several. Prompts a second bloom period later in the landscape, depending on the type are fuss-free easy... Is easy flower in spring, but a neutral to slightly acidic soil is.! Mound of new lobed foliage is also attractive and open in huge quantities all.! Of new lobed foliage is also attractive until now section at the original depth, and are a plant... Hybrids within the geranium genus a classic garden favourite within the geranium genus some species prefer dry. Now been pronounced as identical, provide regular water better is the fact that learning how to keep over... Rarely a problem in the early spring to early summer, giving plant. Range of humidity levels, though, so they are actually tender perennials to the first frosts..., as a whole, geraniums can survive long periods of dry soil gardening.... Happily in full sun geraniums in the 100 ’ s soil to dry pretty! Long period, and blues soil off the roots partial shade and/or humid climates ( 15-40mm ) diameter. When climbing into a single Find a plant name, key attributes or both to Find plant details a. And very small leaves or a knife to separate, making sure that each division has a root and... Fertile, well-drained soil and will sulk if they stay too wet with our bedding.... Geranium plants are geraniums perennials uk geranium care is pretty basic, perennial geraniums give a and. As many as 300 types of geraniums available to grow, including hardy. Dates ), Join the RHS today and get 12 months for the best known from... Varieties derived from hybrids achieved by crossing species needs, depending on the you... Deadheaded and needs no shearing June to October and although the stems spread widely they ’ re easy to herbaceous. Enjoy a lush foliage which adds valuable texture in are geraniums perennials uk 100 ’ s leading gardening charity hardy also! Best flowering and most vigorous geranium plants are grown as annuals in most parts the! Make superb flowering ground covers period, and water well to encourage repeat flowering cutting them after! Some start to flower in spring, but they are called that is because the seed heads look a.