15" tall x 18-22" wide (Propagated by division). This superb allium hybrid is difficult to find in the trade. Consider spreading a 2-inch (5-cm) layer of agricultural grit or spent compost at the bottom of the hole before laying the bulb inside. Allium is a superb flower, famous for its surprising ornamental floral scapes.. Key Allium flower facts. Height – 8 to 40 inches (20 to 100 cm) Exposure – full sun Soil – ordinary. Planting Giant Alliums: Choose a spot with full sun and good soil drainage. Best of all Allium 'Millenium' is a foolproof companion plant that looks great with many other summer blooming perennials. 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. They are hardy in zones 4 through 8. Typically pest and disease free. Doing so can improve drainage conditions. How to grow. It was originally selected in 2000 by Allium maven Mark McDonough. See allium cultivation advice Propagation Propagate by … ‘Millenium’ Ornamental Onion is super hardy member of the Allium family. Allium ‘Millennium’ is a fantastic mid- late-summer-flowering allium, bearing large, rounded heads of pink-purple flowers in June and July. Like all alliums, its blooms are extremely attractive to a wide range of pollinating insects, such as bees, butterflies and hoverflies. Plant them at a depth of 2-3 times their diameter (4-6”) in a well-drained sunny or partly-shaded site. PLEASE NOTE: 'Millenium' Ornamental Onion Allium is restricted and cannot be shipped to the state(s) of GA, ID, NV and WA. When planting multiple allium bulbs, the bulbs should be spaced 6 to 8 inches (15 to 20 cm) apart. Flowering – May to July. Plant dormant allium bulbs in the fall according to your growing zone. Name – Allium giganteum Family – Liliaceae (lily family) Type – perennial. Scatter some peat moss or compost around, and make sure the site doesn't sit in water – alliums do not grow in a puddly area. They do fine in full sun but do equally well in partial shade. Tolerates soil of any fertility and will grow in clay soil. Plant … The leaves generally die down before the flowers open. Today, they can be found growing pretty much everywhere except tropical regions and Australia.. Its aromatic foliage also makes it deer and rabbit resistant. This is really a great seller for us. The Perennial Plant Association has rightly awarded Allium Millenium the 2018 Plant of the Year®! These perennials over winter perfectly in containers in the nursery and they are one of the first plants to wake up in the spring. Allium Millenium - Common name:Ornamental Onion - Combining interesting flower shapes creates a garden design with texture and depth. Dig holes about 3″ deep and 6-8″ apart. These may be planted at any time during the growing season. Herbaceous alliums (such as Allium tuberosum and Allium Millenium) have fiberous roots like other perennials. When to Plant: Alliums that grow from bulbs are planted in the fall, after the first frost and before the ground freezes. Mature plants are covered in dozens of long lasting flowers. Plant the bulbs pointed-end up. 5. Its globe-shaped, rosy-purple flowers add a perky, colorful focus to your late summer garden. Cultivation Grow in reasonably fertile, well-drained soil with full sun. Plant the allium bulbs with the pointy end facing up.