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Blue Drumstick Ornamental Onion
Allium caeruleum 'Blue Drumstick'
Blue Drumstick Ornamental Onion flowers
(Photo courtesy of NetPS Plant Finder)
Plant Height: 12 inches
Flower Height: 24 inches
Spread: 6 inches
Hardiness Zone: 2
Other Names: Flowering Onion
Long sturdy stems with egg shaped flowers stand out in early summer; fragrant blue blooms rise above mounded green foliage, ideal for containers, beds, borders or used in fresh cut arrangements; summer dormant and low maintenance
Blue Drumstick Ornamental Onion features bold balls of lightly-scented blue flowers at the ends of the stems from late spring to early summer. The flowers are excellent for cutting. Its grassy leaves remain green in color throughout the season.
Blue Drumstick Ornamental Onion is an open herbaceous perennial with tall flower stalks held atop a low mound of foliage. Its relatively fine texture sets it apart from other garden plants with less refined foliage.
This is a relatively low maintenance plant, and should only be pruned after flowering to avoid removing any of the current season's flowers. It is a good choice for attracting butterflies to your yard, but is not particularly attractive to deer who tend to leave it alone in favor of tastier treats. It has no significant negative characteristics.
Blue Drumstick Ornamental Onion is recommended for the following landscape applications;
- Mass Planting
- Border Edging
- General Garden Use
- Container Planting
Planting & Growing
Blue Drumstick Ornamental Onion will grow to be about 12 inches tall at maturity extending to 24 inches tall with the flowers, with a spread of 6 inches. It grows at a medium rate, and under ideal conditions can be expected to live for approximately 5 years. As an herbaceous perennial, this plant will usually die back to the crown each winter, and will regrow from the base each spring. Be careful not to disturb the crown in late winter when it may not be readily seen! As this plant tends to go dormant in summer, it is best interplanted with late-season bloomers to hide the dying foliage.
This plant should only be grown in full sunlight. It does best in average to evenly moist conditions, but will not tolerate standing water. It is not particular as to soil pH, but grows best in sandy soils, and is able to handle environmental salt. It is highly tolerant of urban pollution and will even thrive in inner city environments. This is a selected variety of a species not originally from North America. It can be propagated by multiplication of the underground bulbs; however, as a cultivated variety, be aware that it may be subject to certain restrictions or prohibitions on propagation.
Blue Drumstick Ornamental Onion is a fine choice for the garden, but it is also a good selection for planting in outdoor pots and containers. With its upright habit of growth, it is best suited for use as a 'thriller' in the 'spiller-thriller-filler' container combination; plant it near the center of the pot, surrounded by smaller plants and those that spill over the edges. Note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden.
This Plant Library is for informational purposes only. We may or may not carry the items listed. During many times of the year, we may carry many more plants in our store than are listed in the Plant Library. Please contact us directly at 303-690-4722 or visit our store for current availability and for assistance.