The flowers can grow as big as a soccer ball and the stalks can get as high as 3 1/2 feet. The flower is grapefruit-sized with lots of flowers that form a fuzzy ball, but this is a species found on lower mountain slopes in Central Asia, introduced in 1883. Allium giganteum [AL-ee-um jy-GAN-tee-um or gy-GAN-tee-um] is a perennial ornamental onion hailing from Central Asia and the Himalayas. RHS members can get exclusive individual advice from the RHS Gardening Advice team. Another late-bloomer that flowers in autumn. The plant can grow 3′ to 5′ feet high and spread 1-1/2′ to 2′ feet. Mon – Fri | 9am – 5pm, Join the RHS today and support our charity. We'll respect your privacy and unsubscribe at any time. The showy, fragrant, purple … Search by plant name, key attributes or both to find plant details and a list of Tall, strong stems (3″ to 4″ inches high) emerge from the center of the basal rosette early in spring. There is also information suggesting that the bulblets, bulbs, and leaves can be used cooked, raw, pickled and as a seasoning. These flower globes are about the size of a softball and quite impressive. AGM plants have been through a rigorous trial and assessment programme. If there are still water puddles 5-6 hours after a hard rain, scout out another site. If I could grow only one allium it would have to be ‘Purple Sensation’. A showstopper in early summer, plant Allium giganteum in your … The Globemaster giant allium is the horticultural offspring of selective breeding between Allium christophii, sometimes called the … You may need to stake the stem to prevent collapse. 1-1.5 metres, Ultimate spread Leave the Allium gigantea in the flower garden. Information on the toxicity of this plant is conflicting. How to grow. Though valued as an edible pant in Asia, in most gardens around the world this stately bloom is only planted its their decorative blossoms. Join Of the various Allium species of ornamental onions, giganteum is the tallest species. For a start it is easy to cultivate, demanding only a sunny spot in reasonably well-drained soil. Alliaceae, Genus Allium Giganteum Care Size & Growth. 'giganteum' is the tallest species of the cultivated onions. The bloom time lasts for about three weeks. The leaves are approximately 18″ inches long, fragrant and strap-shaped. The plant can grow 3′ to 5′ feet high and spread 1-1/2′ to 2′ feet. By entering your email address you agree to receive a daily email newsletter from Plant Care Today. If you are planning on growing them outside then you can start by organising a seed bed in the autumn by cutting into in abounding of well-rotted ranch manure. It is the only member of the Allium family grown for its large flowers. How to grow alliums. To begin with you need a sunny site with good drainage. allium giganteum photograph by Manuel. This “giant onion” belongs to the Amaryllidaceae family. Allium ‘Giganteum’ AGM The most expensive bulb usually, but well worth it because this is taller, reaching four feet in height. In the United States, this Allium bulb is hardy from USDA hardiness zone 5 through 8. You can readily purchase them in the spring as bulbs - huge bulbs obviously - but as you can imagine, just one bulb can be pricey. Never allow plants to stand in water for extended periods of time as the bulbs will rot. Of the various Allium species of ornamental onions, giganteum is the tallest species. Flowering & Fragrance. Generally trouble-free: Onion white rot and a downy mildew may occur. Stems and leaves of the giant allium plant smell like onions, but this is not an edible plant. Allium moly, lily leek, bears flat, blue-green leaves with rounded clusters of star-shaped golden yellow flowers; Origin: Asia (particularly Turkey and Iran) and Europe (especially in the Mediterranean area) 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. The flower head also produces seeds, but most gardeners plant the easy to handle bulbs. In early to midsummer, small globes of intense … Blossoms the size of softballs sway atop lofty stems in late spring, at about the … 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. giant onion giant allium, Family Allium giganteum, also known as Giant Onion, is a perennial bulbous plant of the onion genus, used as a flowering garden plant, and growing to 1.5 metres (4.9 ft). The seeds will germinate quickly and reach flowering size in a couple of years. Light: Allium thrive in full sun, but can tolerate part-shade conditions. In summer, this plant bears large rounded flower heads up to 4 inches across with a multitude of star-shaped lilac-pink flowers. Because they are so tall, they make a very dramatic background plant. Or amend the soil with the addition of organic material to raise the level 2-3" to improve the drainage. Feet high and spread 1-1/2′ to 2′ feet combine them with how to propagate allium giganteum for... Allium genus iself is a genus that features every type of onion, large bulbs of showy flower heads early! Of this plant will provide nectar and pollen for bees and the can! Carefully researched and chosen by RHS experts hard to increase the number of plants with information. Onions, giganteum is the UK a greener and more beautiful place your privacy and unsubscribe any... 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how to propagate allium giganteum

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