White Ornamental Onion
Allium maximowiczii 'Alba'
White Ornamental Onion flowers
(Photo courtesy of NetPS Plant Finder)
Height: 12 inches
Spread: 12 inches
Hardiness Zone: 2a
Other Names: Flowering Onion
White Ornamental Onion has masses of beautiful clusters of lightly-scented white flowers at the ends of the stems from late spring to early summer, which are most effective when planted in groupings. Its grassy leaves remain green in color throughout the season. The fruit is not ornamentally significant.
White Ornamental Onion is an open herbaceous perennial with an upright spreading habit of growth. 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.
White Ornamental Onion is recommended for the following landscape applications;
- General Garden Use
Planting & Growing
White Ornamental Onion will grow to be about 12 inches tall at maturity, with a spread of 12 inches. It grows at a medium rate, and under ideal conditions can be expected to live for approximately 5 years.
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 type or pH, 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.