Allium Millenium is different than most Ornamenta Onions in that it will form a clump rather than just stay as a single plant. Millenium is more heat resistant than other varieties which makes this a great choice for southern gardeners. If your looking for something a little different in your cut flower arrangements this flowering onion is a good choice for adding a whimsical feel.
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Allium Millenium is one of the best flowering ornamental onions available today. This hybrid cultivar flowers in the summer rather than spring-like its other ornamental onion relatives. This is a great way to extend the bloom time of alliums in the garden.
Allium millennium blooms in mid-summer and produces large globes of rose-pink flowers. As the plants mature, they will have dozens of flowers that look like pink orbs floating through the garden. Allium Millenium is a clump former so expect the clumps to increase in size year after year. Allium Millenium was voted the 2018 perennial plant of the year by the perennial plant association.
18 to 20 inches
1 to 2 feet
Green strap-like leaves
Prefers dry, average to sandy soil
Water well until established
Interplant among other perennials to allow the flowers to rise above and "float" almost magically.
Frequently Asked questions
What are the soil requirements for Allium Millenium?
Allium Millenium will not do well in soil that stays constantly wet as this causes the root system to rot. This is especially important in the winter months when the plant is dormant.
How do you fertilize Allium Millenium?
Allium Millenium will benefit from a yearly application of fertilizer. A good quality organic fertilizer such as Espoma flower tone sprinkled around the base of the plant in the spring is all that's needed.
Should the spent flowers be removed from Allium plants?
It is not necessary to remove the spent flowers from allium plants such as Allium Millenium, but if you choose to to give your garden a more tidy appearance the entire flower stalk should be removed at the base. This will allow the allium bulb or onion to rebuild its energy which will promote better flowering the following year.