Planting Depth: 8 Bulbs per Square Foot: 3 Plant behind or among low growing perennials or annuals for a distinctive touch in any garden. Allium is the botanical genus for garlic, onions, chives, and also these flowering spring plants. Alliums are members of the same family as onions; however they are grown for flowers and not food. This type of allium is usually sold as a potted plant, and may be more available in spring than fall. Allium loves high sun exposure. For best results, we recommend planting your allium bulbs just over twice as deep as the height of the bulb and about 5 or 6 inches apart. © 2020 Copyright & Powered By Holland Group. Ambassador Allium Care . If it is 2 inches (5 cm) tall, plant 6 inches (15 cm) deep. Allium loves high sun exposure. Allium cristophii is a real stunner with orbs of flower up to 9in across that shimmer and sparkle in the late spring sunshine. Growing alliums in the garden deters rodents, the peach borer, and even the destructive Japanese beetle. They do not like to be exposed fully to the elements. Plant allium bulbs in an area that receives full sun to part sun. Sell a wide assortment of bulbs and earn 50% profit on all of your sales! Alliums are generally plants of sunny and well-drained soils. Allium bulbs that are planted in fall most often bloom in late spring. Allium hollandicum ‘Purple Sensation’ bears large, rounded heads of deep violet, star-shaped flowers, on tall sturdy stems. Blooming for up to 5 weeks in late spring to early summer, this spectacular Allium enjoys one of the longest blooming season. Individual plants can spread about a foot to a foot and a half. The range of flower sizes and shapes among allium blooms create interest while they are blooming, and even after. An even greater effect can be achieved by growing a row of 10 taller alliums such as Purple Sensation behind a row of 10 slightly smaller ones like Azureum. Giant Allium’s flowers are long blooming and are excellent to use as cut or dried flowers. The Allium Globemaster looks absolutely fantastic on its own and will put a smile on anyone’s face. The sunnier the planting location the taller and larger blooms you will have. As with any perennial, site selection and preparation is key to the long-term success of the plant. The standard method for calculating the ideal depth is to dig a hole three times as deep as the bulb is high, and place the bulb at the bottom with its pointy end up. Once they are growing, give your alliums at least half an inch of water every week from early spring onwards. Soil must be light and drain well, and even poor soil is fine. Send me your questions! 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. Allium giganteum and Gladiator Allium are tall but also have large flowers. Newer Post, © Copyright 2020 DutchGrown. Depending on the size of the bulb, plant 10-15cm deep and 10-15cm apart. Outdoor Planting Plant bulbs in the fall. The small and middle sized alliums (A. cowanii, 'Hair', ' Purple Sensation ', sphaerocephalon, atropurpureum and Nectaroscordum) can be planted en masse. Soil must be light and drain well, and even poor soil is fine. The colder your climate, the earlier in autumn you should plant them. Plant allium bulbs in fall or early winter. The scent is not overwhelming. In spring, when growth starts to appear, apply a balanced fertiliser to poor soils. Allium bulbs planting instructions Rich, well-drained soil Plant your allium bulbs in the autumn in rich, well-draining soil, to double the depth of the bulb. Therefore, planting ornamental onions among your vulnerable flowers and bulbs can help to deter critters in the garden. Like many other flower bulbs allium bulbs demand that the soil has adequate drainage. across (20 cm), densely packed with hundreds of small, star-shaped purple flowers. In its dreams, the stodgy onion tosses its lavender head and dances in the garden. Plant the bulbs in a multi-purpose compost and water thoroughly. Allium is remarkably resilient in a dormant state and can wait to be planted, but needs to be in the ground a few weeks before the ground freezes in order to put down roots. In general, the pointed end of the bulb should face the sky. Remember that the top of the allium is pointed, but if in dount plant the bulb on its side. 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