Spread: 1' - 2' (30cm - 60cm) Allium 'Gladiator' (Ornamental Onion) Award-winner Allium 'Gladiator' is one of the tallest and most architectural onions with its inflorescence consisting of dozens of small star-shaped reddish-purple flowers forming a 6 inches across (15 cm) globe-shaped cluster. Hi Paula – Allium ‘Millenium’ is an herbaceous allium, which means it grows from a clump of roots (like most other perennials) rather than from bulbs (like Gladiator or Purple Sensation). Architectural, Cottage/Informal, Flower Arranging, Beds and borders, Gravel. If it is a worthwhile plant then you can plant the baby bulbs and grow them on. For extra flair, plant shorter-stemmed blooms in from of the leafless stalks of Gladiator. The seed heads look like tiny (2 mm across or so) three cornered green hats. Allium Gladiator blooms are pleasantly fragrant and this plant is an easy and prolific addition to the garden. Tall varieties of allium such as Summer Drummer Allium, White Giant Allium, Allium giganteum, and Gladiator Allium are best planted in the back of a planting area. In addition to the globe-shaped blooms, many varieties of allium are tall, growing over 4′ when mature. Gladiator Ornamental Onion will grow to be about 14 inches tall at maturity extending to 4 feet tall with the flowers, with a spread of 15 inches. They naturalize quite well, returning year after year with increased vigor and blooms. Large flowering allium, such as Gladiator are best planted in groups of 3 or 5, you can plant 3 bulbs per square foot for the best affect. Alliums make wonderful cut flowers. Many varieties of allium have a strong geometric shape. Although they aren’t high maintenance, they do have some specific requirements. The normal bloom time is midsummer, so you won’t see any flowers until then. It grows at a medium rate, and under ideal conditions can be expected to live for approximately 5 years. Allium 'Gladiator' (Allium 'Gladiator') will reach a height of 1.5m and a spread of 0.5m after 2-5 years. Do not cut back the browning allium leaves until fall, that is how they store energy for flowers the next season. Allium 'Gladiator' If not then remove and bin!. Some Alliums are devils for forming bulbs on the old flowering stems. (This is why planting foliage plants around them is important.) They spread like that and some of them SPREAD!. They have an undeniable charm, and those balloon like blooms are a great conversation piece. Each one contains three little black seeds.. Ornamental or flowering alliums are part of the Allium genus, members of the Amaryllidaceae family that includes garlic, leeks, and onions.. Plus, butterflies and other pollinators love alliums and will visit the landscape in large numbers. Suggested uses. Plant in groups of three or more for best effect. Gladiator – A giant variety. Cultivation. Learn how to make a beautiful bouquet with them in this helpful post The Starring Ingredient of a Stunning Bouquet by Slow Flowers with Debra Prinzing.In her post, she shares a step-by-step guide on how to take fresh-from-the-field flowers and put them into a … In addition to these garden-worthy types, there are dozens of other species that are native to North America. Our Favorite Allium Varieties. Photo by ‘Gardener’s Supply‘. The flowers are large round and purple, growing 6-8" in diameter, in late Spring to Early Summer. What Are Ornamental Alliums? 1 bulb per bag. Grow in fertile, but well-drained soil. Allium bulbs are splendid for naturalizing if planted in rich, well drained soil Scent keeps deer, rodents & rabbits at a distance Beloved by bees, butterflies & pollinators » Massive 8-10" globe shaped flowers » Blooms in Late Spring - Early Summer Let’s jump in. Allium Giant 'Gladiator' Ornamental Onion . 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