Black Garlic Ornamental Onion in bloom
(Photo courtesy of NetPS Plant Finder)
Plant Height: 12 inches
Flower Height: 4 feet
Spread: 12 inches
Hardiness Zone: 4a
Other Names: Flowering Onion
Striking creamy globe flowers emerge from thick strappy green foliage; attracts butterflies; plant close together for a massed effect or plant futher apart among lower growing plants
Black Garlic Ornamental Onion features bold balls of lightly-scented creamy white flowers at the ends of the stems from late spring to early summer. The flowers are excellent for cutting. Its fragrant sword-like leaves remain green in colour throughout the season. The fruit is not ornamentally significant.
Black Garlic Ornamental Onion is an open herbaceous perennial with tall flower stalks held atop a low mound of foliage. Its relatively coarse texture can be used to stand it apart from other garden plants with finer 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.
Black Garlic Ornamental Onion is recommended for the following landscape applications;
Planting & Growing
Black Garlic Ornamental Onion will grow to be about 12 inches tall at maturity extending to 4 feet tall with the flowers, 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 species is not originally from North America. It can be propagated by multiplication of the underground bulbs.
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