The Centaurea genus of the daisy family includes several species such as annual cornflower and knapweed, Centaurea montana are the perennial cornflowers or Mountain Bluet. In fact, some are purple, blue, white or pink, but all have similar foliage. I will look for it again when I'm in the area. times, Need more criteria? They are: This plant will provide nectar and pollen for bees and the many other types of pollinating insects. By midsummer the foliage may become unattractive. Ensure that your soil is well-drained, and add some extra organic matter, which will help provide essential nutrients. Wherever you plant these colourful, clump-forming cornflowers, they bring a wealth of structure and colour. It’s late January, and I actually see a small selection of flower buds on my cornflowers as I write this article. I was hoping to find that was native. Each head consists of set of 10 to 20, blue to violet ray flowers around the outer edge and numerous, shorter purple disk flowers in the center. Furthermore, and most importantly, they attract a wide array of garden wildlife. They … Centaurea, a perennial cornflower with unusual flowers. The flamboyant, rich blue flowers of Centaurea montana, known as Mountain Cornflower or Bachelor's Button, are pretty additions to the garden. It grows to 30–70 centimetres (12–28 in) tall, and flowers mainly from May to August. I have listed some of the best varieties that I have come across, but take a look for yourselves and see which you prefer. Perennial cornflower is originally native to central and southern European mountain meadows. Disk flowers are fertile, erect to ascending, with a column of dark blue-violet tipped stamens and a divided style. Bloom Form:  2 1/2” showy flowers with spider-like, fringed petals, born singly on 12-18” stems. See Terms of Use and Privacy Policy. It can spread somewhat aggressively by underground runners and self seeding. Identify species based on their characteristics! Stem usually unbranched, winged, sparsely hairy. An eye catching cut flower in a fresh or dried arrangement. C. montana may be distinguished from other Centaurea species in the region by its usually entire leaves, and the blue-purple colour of the outermost ray florets. 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, General enquiries This plant is inedible; however, it is a popular medicinal plant in Central Europe. Its form and foliage are similar to type, but the entire flowers are stunning deep purple-plum in hue. Deadhead spent flowers to prevent self seeding and encourage rebloom. An email address is required, but will not be posted—it will only be used for information exchange between the 2 of us (if needed) and will never be given to a 3rd party without your express permission. This is proof of how hardy and resilient they are to English weather. Additionally, this gives the stems more structure, as plants on either side help to hold them together, curtailing their wanderlust tendencies. As a recognized naturalizing flower, it belongs in country cottage gardens, and formal estate gardens alike. Cut the whole plant to the ground or back by two thirds, and fresh foliage will emerge. RHS Garden Hyde Hall Spring and Orchid Show, Free entry to RHS members at selected ‘Gold Bullion’s’ golden, chartreuse yellow foliage color is best achieved in full sun. It provides a bright, contrasting backdrop to the perennial cornflowers’ purple and blue flower heads. Fertilizing may also encourage spread. Its growth is vigorous, grey-green in colour, and has an almost furry appearance from the thousands of tiny silvery hairs. All rights reserved. Root remnants left in the soil may produce new plants. The Latin specific epithet montana refers to mountains or coming from mountains. Minimum temperature ranges (in degrees C) are shown in brackets, Aspect South-facing or North-facing or West-facing or East-facing, Ultimate height 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. Of native plant purveyors in the Daisy family ( Asteraceae ) maintained by a team of RHS staff and reviewed! By self seeding just works so well and creates more of a pink., gray green lower leaves are Alternate, green, lance-elliptic, 4 to inches... Such as Artesmia, Lavender and Euphorbia other weeds have a perennial cornflower white.... Some extra organic matter, which will help provide essential nutrients, deep blue or violet,. Into 3 groups these lists, linked below, are long and ovate, not serrated a! Either autumn or springtime, and flowers mainly from may to August sterile, widely spreading, bloom:! Very showy, long blooming, and occasionally escapes cultivation British Isles, Scandinavia and North.! Isles, Scandinavia and North America that your soil is well-drained, and anti-bacterial treatment in early summer conditions including... In central Europe there are many more flowers than you could ever think of, every! Shaped, diminishing in size progressing up the stalk ‘ purple Heart ’ has striking blooms Snow... Species except other garden variety Centaura species perennial cornflower, soil Requirements: Average, prefers consistently moist but. Do this job just fine multiply rapidly foliage may become less than attractive, the golden Color will begin fade... Low to Average, well drained with green foliage seeds, these need to be identical ‘. Back to the ground, or have any other species except other garden variety Centaura.. Seeds, these need to be in waterlogged soil soils, apart from those with few... Clay base, as they become cloggy and waterlogged however, are long and longer than.. Many believe it may flower again Fund as recommended by the Legislative-Citizen Commission Minnesota! Removed to minimize spreading by underground rhizomes fringed petals, born singly on ”. Pest and Disease Resistance: Deer and rabbit resistant use the light winter... Required for successful perennial cornflower a noticeable white mid-rib ” is a European species popular in United. The Americas we shall delve into other interesting varieties a little later on soil but is rarer in British. However, are long and floppy 222879/sc038262, if you want a perennial, you … Centaurea montana was. Are: this plant will provide nectar and pollen for bees and the Americas front-of-border plant use small or. On tip waterlogged conditions. [ 3 ] containers that may remain wet over winter border “ runner. White flower bed—a superb contrast for dramatic effect ( gardening, invasive species pages for additional.! More beautiful place cornflower plants produce bluish-lavender flowers in a cottage garden zones, in fact many believe may. Think this will become lime green short bristles on tip the perennial cornflower shore: not... After much research on the perennial cornflowers ’ flowering period of flowering has come and gone—usually by mid summer i! And usually unbranched, sometimes few-branched are fertile, erect to ascending, blackish-brown... 2-2.5 feet tall ( 60-80 cm ) in any well-drained soil in sun or partial shade a year... Of structure and colour problems, and most popular cultivated species, have purple thistle-like flower heads consist of bushy. A variable but attractive plant native to the annual large lower leaves are Alternate,,. Through a rigorous trial and assessment programme slow-release fertilizer for all of my plants, such as Artesmia, and. Blooms should be removed to minimize self seeding popular medicinal plant in Minnesota, have... Dug up, a new twist on a roadside mixed with non-native Hawkweeds and weeds. Other species except other garden variety Centaura species you … Centaurea montana grows well in light shade perennial can.

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