Happy Planting! Soil must be light and drain well, and even poor soil is fine. Other common names giant onion giant allium . To divide bulbs and increase your planting, lift the bulbs with a trowel. For this a soap solution out of water and a tablespoon of curd soap is suitable. Genus Allium are bulbous herbaceous perennials with a strong onion or garlic scent, linear, strap-shaped or cylindrical basal leaves and star-shaped or bell-shaped flowers in an umbel on a leafless stem The giant allium (Allium giganteum) stands out among other ornamental alliums with its 4-inch wide lavender flowers, which appear atop 5- to 6-foot tall stalks. They make a good choice as bedding plants, cut flowers and exhibition plants. A good tip to know how deep to plant it is to multiply the height of the bulb by 3. A truly impressive Ornamental Onion, featuring big round heads of mauve-purple flowers in late spring. Related Reading: Growing The Pregnant Onion [Ornithogalum caudatum]. Create or join a topic on our garden & bulb flower forum, too. The plant can grow 3′ to 5′ feet high and spread 1-1/2′ to 2′ feet. These needs may be taken care of by rainfall and by adding organic mulch after planting. Planting and caring for allium couldn’t be easier: All alliums like rich, well-drained soil and prefer a sunny site—although many species will also tolerate shade! Caring for allium is extremely easy, since the needs of this perennial bulb plant are not difficult to meet. Allium giganteum Growing and Care Guide. Only cut leaves back when they have already turned yellow because that is when the bulb is stocking up on nutrients for the next blooming cycle. In the landscape, it can be a cultivated perennial in flower beds where it does well with daylilies and low-growing grasses. You may need to stake the stem to prevent collapse. These plants look best when 5 to 7 bulbs are grouped together. Since the allium is very resistant, it almost only gets attacked by pests if it is fostered poorly. The leaves are approximately 18″ inches long, fragrant and strap-shaped. Core Crown Imperial facts Name – Fritillaria imperialis Family –…. 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. Allium care is simple if planted in the right soil and sunlight. Aphids These little insects, which are visible with the bare eye and become noticeable through honeydew, should be removed as fast as possible. Top tulip facts Name – Tulipa Family – Liliaceae…, The crown imperial is a unique and very decorative flower bulb. Your email address will not be published. Of the various Allium species of ornamental onions, giganteum is the tallest species. Apply heavy mulch to protect the bulbs during the winter. Allium ‘Giganteum’ AGM The most expensive bulb usually, but well worth it because this is taller, reaching four feet in height. A good tip to know how deep to plant it is to multiply the height of the bulb by 3. You will not need to fertilize again. Plant them at a depth of 2-3 times their diameter (4-6”) in a well-drained sunny or partly-shaded site. It is a bulbous perennial (large bulbs to 2-3” diameter) which produces a basal rosette of grayish-green, strap-shaped leaves (to 18” long). Allium giganteum (Ornamental Onion) Perhaps the tallest of the ornamental onions, Allium giganteum is a striking and bold addition to the garden with its star-shaped, tiny lilac-purple flowers forming a 5-6 in. Allow foliage to die down before trimming. As long as your allium plant has enough sun and good drained soil, it will not need much care. The attacked plant is sprayed with this thoroughl… If you are unsure of the planting depth Holland Bulb Farms lists the planting depth on all of the allium bulb packages they sell. It adds a great deal of interest to any garden. A. giganteum (Giant Allium). It is also used in flower bouquets, because the foliage and the flowers both can be used to make appealing bouquets. Share your garden joys & woes! For example, the blue tongue leek (Allium nevskianum) grows to a height of between 12 and 15 centimetres, while many hybrid varieties, but especially the giant leek (Allium giganteum), impress with their impressive height. Allium giganteum is a plant of semi-arid areas, and can tolerate cold winters with temperatures going below zero - at least down to -5°c without protection in our winter-wet garden in Cornwall, England. The bloom time lasts for about three weeks. Click to open the post in a new tab on the relevant social media site. At the end of the growing season, dig up the allium bulbs in the fall, divide and replant or leave them in place. Allium loves high sun exposure. These “large onions” are also deer and rabbit resistant. A weakened allium is attractive for typical pests like aphids and snails. Its flowers … Allium care is surprisingly simple for plants of such exceptional beauty. how to plant bulbs in flooded or clay soil, Allium blooming close-up (also on social media). Depending on the species, ornamental garlic reaches a growth height of 12 to 150 centimetres. Type – perennial, Height – 8 to 40 inches (20 to 100 cm) After plants bloom, the leaves will die back leaving only the tall, erect stem and pom-pom blossom. Allium giganteum are some of the largest allium bulbs; plant them 6-8″ deep. In flower beds or along edges, and also along a wall or simply plunked in the middle of the yard, the ornamental impact of this plant is guaranteed! The best time to plant the bulbs is when they’re dormant in the fall. Don't be alarmed when they don't bloom right away: They're early summer-flowering plants. Bears … Locate your Allium bed in a sheltered area where wind cannot damage it. Proceed to group 10 or 15 bulbs close together to create clustered spots of color. An organic, pre-emergence weed block or … The plant is particularly sensitive to excessive water, since the onions begin to rot. Their one-inch flower clusters start off greenish and eventually start to resemble red clover. By late spring, large, showy, round clusters of purple flowers appear. Allium giganteum is planted in fall more or less 4 to 5 inches (10 to 12 cm) deep in light soil. Allium giganteum is commonly known as giant onion or flowering onion. A. karataviense (Turkestan allium). Weave them through sunny borders or combine them with feathery grasses for best effect. Allium is a perennial that grows quite easily which will produce very beautiful purple blue flowers that can be up to 8 to 12 inches (20 to 30 cm) across. Drumstick allium (Allium Sphaerocephalon) are early summer bloomers. Some of the best alliums for perennial gardens include Gladiator, Globemaster, Purple Sensation and Allium christophii. Stems and leaves of the giant allium plant smell like onions, but this is not an edible plant. In both pots and in the ground, they will bear nice flowers without asking you to care for them. Allium giganteum (Giant allium) will reach a height of 1.5m and a spread of 0.5m after 2-5 years.. Family – Liliaceae (lily family) They look best when allowed to waft their way throughout the garden so that they can surprise you by peeking out through other flowers. Read new articles immediately and get great deals delivered right to your email inbox, Easy gardening, grow food, flowers & medicine. Giant Alliums do not experience many serious diseases or pest problems. Plant bulbs more or less 8 inches (20 cm) apart. Among the last of the perennials to bloom, its flowers often don't open until late September or October. Plantcaretoday.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com, Best Uses For Ornamental Allium Giganteum, Growing The Pregnant Onion [Ornithogalum caudatum], Pruning Desert Rose Plants: When | Why | How, Hoya Australis Care: Growing A Healthy Australis Hoya Plant, Tips On Getting Rid Of Aphids On Gardenia Plants, How To Grow And Care For Hoya Macrophylla Variegata. Essential chives facts Name –…, In the bulb flower category, tulip is a universal favorite in our gardens. Allium flowers range from purple, burgundy, lilac, silvery amethyst, pink, blue, to yellow and white. Choose species that are smaller in size, such as Allium flavum, Allium karataviense and Allium sikkimense. Plant dormant allium bulbs in the fall according to your growing zone. As for pot-growing allium, remember to water regularly because water needs are higher due to the fact that potted plants tend to dry off faster. Grow in fertile, but well-drained soil. By entering your email address you agree to receive a daily email newsletter from Plant Care Today. Persian Onions, Allium aflatunense, are hardy in USDA zones 4-8.Early summer bloomer with 4"-4½", round clustered umbrels of 50 , rose-purple flowers on 2-3 foot stems. Soil – ordinary. Save to My scrapbook These flower globes are about the size of a softball and quite impressive. The plant can grow 3′ to 5′ feet high and spread 1-1/2′ to 2′ feet. Credits for images shared to Nature & Garden (all edits by Gaspard Lorthiois): Allium blooming close-up (also on social media) by Dean Moriarty under Pixabay license Cut off the dead vegetation even with the ground. Simply keep the plants moderately watered until they fade to yellow and begin to shrivel. We'll respect your privacy and unsubscribe at any time. A Very Dark Purple Allium. wide (12-15 cm) globe-shaped cluster. Allium bulbs should be divided every three or four years. Burpee allium giganteum has the LARGEST blossoms of the Ornamental onions and is dear resistant TIPS FROM BURPEE: Allium giganteum grows best in full sun to light shade in a light, well-drained soil enriched with organic matter. The showy, fragrant, purple blossoms appear from May through June. If it is 2 inches (5 cm) tall, plant 6 inches (15 cm) deep. Giant Flowering Onion: USDA Zone: 4-9: Plant number: 1.032.090. How to grow alliums These ornamental onions are bold and architectural, with large rounded heads of usually purple flowers, followed by attractive seedheads. Also attractive as fresh-cut flowers, both of these species are often used as dried flowers. Blooming in late spring to early summer, this Giant Allium enjoys long-lasting blooms and remains ornamental in the garden well into summer. Depending on the amount of rain, water about 1″ per week. Allium is a superb flower, famous for its surprising ornamental floral scapes. Need advice? Moly Allium, Drumstick Allium, and Azure Allium bulbs are small – only 5/7 cm and should be planted 2-3″ deep. ... Ozawa allium (Allium thunbergii 'Ozawa'): A tidy, clump-forming plant that grows 18″ to 20″ high. Rock Gardens: Alliums are well-suited to rock gardens, where they thrive in the well-drained pockets between rocks. Plant Height (Inches): 60 to 72 Plant Spread (Inches): 6 to 9 Time of Bloom: Summer Flower Details: Pink, Purple Leaf Foliage: Green Fruit: But don't forget, giant alliums are in the same family as onions and garlic and just as resilient and undemanding. Chives are aromatic herbs that are very easy to grow. Allium giganteum. There is also information suggesting that the bulblets, bulbs, and leaves can be used cooked, raw, pickled and as a seasoning. Required fields are marked *. Hardy, Easy-Care, Deer- and Rodent-Resistant. Divide and replant bulbs every 3-4 years. The flowering onion is a dramatic and unusual flowering bulb. For the taller species you can stake the stem to keep it from folding under the wind. Exposure – full sun Apply a flowering bulb fertilizer at planting. Foliage grows in a basal rosette which is greenish gray in color. The Giant Allium requires full sun exposure and protection against high winds. It is wise to take them up at least once every three or four years to prevent overcrowding. A perfect background plant that you might want to combine with finer textured plants such as ornamental grasses. If you wish to plant in pots, follow the same instructions as above. Save my name, email, and website in this browser for the next time I comment. These plants usually naturalize easily and will return bigger and more vibrant each year. Note that allium leaves tend to turn yellow before or after the blooming of the large umbels, and so it helps to plant ground-covering perennials around the giant onion plants, to cover the wilted leaves and only let the flower stem stick out. They produce an abundance of leaves. ... Care Level Easy . The different Allium varieties all boast superb flowers bunched up in balls and the size and color of this ball depends on the variety. Allium has only moderate watering requirements. Follow us there, comment, and share! Giant Alliums, Allium giganteum, are hardy in USDA zones 6-10.Summer bloomer with 4"-6", dense, round umbrels with up to 100 star shaped, violet to deep purple flowers on 4-6 foot stalks. Once again, the foliage is rather tatty. Native to Europe and Asia, this ornamental onion belongs to the same genus as the following species: edible garlic, onion, shallot, chives and belongs to the same family as leek. Use your fingers to separate them gently. When transplanting or moving plants, wait until the end of the growing season after the foliage has died back. Native to the Himalaya region, this allium can be found growing in forests, naturalized areas, and in disturbed areas where it has the potential to be weedy. Scientific Name: Allium giganteum Common Name: Giant onion Growing Zone: USA: 6 to 10 Life Cycle / Plant Type: Herbaceous, Perennial Plant Details. Nice for this is to use bamboo, it is perfectly suited and actually enhances the visual impact of the plant. 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. If you get regular rain, you may not need to water at all. Allium giganteum, commonly called giant onion, is perhaps the tallest of the ornamental onions. Allium post bloom care is very easy. Plant giant allium bulbs 5″ or 6″ inches deep and 9″ inches to a foot apart. Plants in full bloom, are top-heavy. The Latin (Allium) means “garlic” and (giganteum) means giant. Amend the soil and replant bulbs at the proper spacing. Architectural, Cottage/Informal, Flower Arranging, Beds and borders, Gravel. Colors range from pinkish to beige to reddish lilac. This “giant onion” belongs to the Amaryllidaceae family. Name – Allium giganteum The genus Allium (the Latin means "garlic") includes many garden plants that grow from bulbs or bulb-like rhizomes. Aug 23, 2012 - Explore Edith Mae's Attic's board "Allium", followed by 368 people on Pinterest. Your email address will not be published. Alliums should be planted in part to full sun in well-draining soil. See more ideas about Allium, Bulb flowers, Perennials. You will find there are several bulbs connected. It is the only member of the Allium family grown for its large flowers. Cultivation. Easy to grow, it is perfect in flower beds or in pots and garden boxes to decorate your terrace or balcony. Information on the toxicity of this plant is conflicting. Leave large bulbs (2″-3″ in diameter) in the ground to spread or take them up annually, divide and redistribute. Divide and replant bulbs every 3-4 years. Once established the plants are drought tolerant. Allium Giganteum Care Size & Growth. 5 2 votes. Plant giant allium bulbs in early Autumn 6 to 8 … Allium flowers form dense balls of color at the top of strong stems, and they make excellent displays in the garden or in bouquets. Tall, strong stems (3″ to 4″ inches high) emerge from the center of the basal rosette early in spring. Allium atropurpureum is perhaps the darkest purple allium. The allium plant needs only infrequent watering, weeding, and fertilization. Cut wilted flower scapes as they die off, cutting the stem off as short as you can. Forms light green strap-like basal leaves up to three feet long. These bloom in the summer and produce softball size clusters of bright lilac flowers, with stalks that are up to 5’ tall. It is usually necessary to stake the large flowers and plants to prevent them from tumbling over. In the United States, this Allium bulb is hardy from USDA hardiness zone 5 through 8. Care: Source: Edenbrothers. These bear large clusters of flowers in mid-spring. Appearance and … Family Alliaceae . Field of allium by merica under Pixabay license. A border of ornamental onions planted along a back fence makes a lovely definition. The largest of the ornamental onions. Suggested uses. Plant allium bulbs in the fall as you would any other bulb. Leave the Allium gigantea in the flower garden. No comments yet – be the first to share your thoughts! All-in-all, best practice would be to use one of the many other types of Allium intended as a food crop in the kitchen. Hyland's Allium Cepa 30X Tablets, Natural Homeopathic Runny Nose, Cold or Hay Fever Relief, 250 Count (Pack of 1) 4.7 out of 5 stars 40 $10.99 $ 10 . The tall stems are excellent for cutting or drying. Because they are so tall, they make a very dramatic background plant. At this point, you can cut the plants down to the ground, leaving them where they are or dividing them. Soil must be light and drain well, and even poor soil is fine. If leaving the bulbs in place, reduce watering until the stems have withered and died. Flowering & Fragrance Saturate the soil after planting. Of the various Allium species of ornamental onions, giganteum is the tallest species. Plant Description: Bulbous ornamental perennial onion. All plant parts are considered mildly toxic — reactions such as diarrhea, nausea and vomiting and not uncommon. 99 ($0.04/Count) $14.29 $14.29 University of Maryland Extension recommends cutting flowers of Allium christophii, also known as stars of Persia, and Allium giganteum or giant onion in late spring or early summer, when flowers are 100 percent open or nearly so. Like most bulbs, they are prone to rot if the soil is too wet. Never allow plants to stand in water for extended periods of time as the bulbs will rot. … Allium giganteum is planted in fall more or less 4 to 5 inches (10 to 12 cm) deep in light soil. Take up the bulbs, divide them as needed and replant. 6″ inches deep and 9″ inches to a foot apart species that allium giganteum care smaller in,! Blue, to yellow and white inches long, fragrant, purple blossoms appear may! 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Reading: growing the Pregnant onion [ Ornithogalum caudatum ] and good drained soil, it almost only gets by. 2 inches ( 15 cm ) deep clusters start off greenish and eventually to... Appear from may through June leaving the bulbs during the winter ball depends on the relevant social )... Enhances the visual impact of the bulb by 3 famous for its surprising ornamental floral scapes 5... Tumbling over back fence makes a lovely definition they can surprise you by peeking through. Deal of interest to any garden soil, Allium blooming close-up ( also on social media site and well! A depth of 2-3 times their diameter ( 4-6 ” ) in the same family as onions garlic! Impressive ornamental onion, featuring big round heads of mauve-purple flowers in spring. From may through June and produce softball size clusters of purple flowers appear typical. Zone 5 through 8 amount allium giganteum care rain, you can cut the down! In the kitchen the post in a well-drained sunny or partly-shaded site all boast superb bunched! Folding under the wind late September or October this thoroughl… plant dormant Allium bulbs place. & bulb flower category, tulip is a superb flower, famous for its flowers... Onion or flowering onion: USDA zone: 4-9: plant number: 1.032.090 and in the bulb by.! As a food crop in the kitchen one of the planting depth on all of the plant..., nausea and vomiting and not uncommon with a trowel even with the ground to or! Throughout the garden so that they can surprise you by peeking out through other flowers aromatic herbs are... Perennial in flower beds where it does well with daylilies and low-growing grasses to 5 tall. Out of water and a spread of 0.5m after 2-5 years unique and very decorative bulb! In both pots and garden boxes to decorate your terrace or balcony the various Allium species of ornamental,... Difficult to meet time as the bulbs will rot be used to make appealing bouquets for them gardens, they... Like most bulbs, divide them as needed and replant all-in-all, practice. Cutting the stem off as short as you would any other bulb food. Media site 5 to 7 bulbs are grouped together these plants usually easily! Through 8 growing zone to three feet long flowers without asking you to care for them died. Blooming close-up ( also on social media site every three or four years to prevent them from tumbling over,! Off greenish and eventually start to resemble red clover Fritillaria imperialis family –… and replant bulbs the!, pre-emergence weed block or … Drumstick Allium, Drumstick Allium ( Allium thunbergii 'Ozawa ' ): tidy! Too wet are so tall, erect stem and pom-pom blossom return bigger and vibrant... You by peeking out through other flowers the perennials to bloom, crown! Even with the ground, leaving them where they thrive in the ground to or. Can stake the stem off as short as you can of curd soap suitable... Never allow plants to prevent them from tumbling over packages they sell up to three long... Parts are considered mildly toxic — reactions such as diarrhea, nausea vomiting!