Search Results for "Allium"

Rhamnus alaternus 'Argenteovariegata' (Italian buckthorn 'Argenteovariegata')

Other names: Rhamnus alaternus 'Variegata'

'Argenteovariegata' is a large, evergreen shrub bearing greyish-green leaves with creamy-white margins. Inconspicuous yellow flowers in late spring and early summer are followed by small, red berries that turn black as they ripen.
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4m max. spread

4m max. height

20-50 Years to maturity

Allium nigrum (Black garlic)

Other names: Allium multibulbosum, Broad-leaved onion , Allium afrum, Allium bauerianum, Allium magicum, Allium paucibulbosum, Kalabotis nigrum

A. nigrum is a bulbous perennial with strap-shaped leaves. In mid-summer, it produces globular heads of white, star-shaped flowers on upright stems. It gets its name from the dark centres to its flowers.
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0.4m max. spread

0.45m max. height

2-5 years to maturity

Allium unifolium (One-leaf allium)

Other names: One leaf onion, American onion, Allium murrayanum

A. unifolium is a bulbous perennial with strap-shaped leaves and rounded umbels of pale, rose-pink, star-shaped flowers in late spring.
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0.3m max. spread

0.4m max. height

2-5 years to maturity

Allium schubertii (Schubert's allium)

A. schubertii is a clump-forming, bulbous perennial with strap-shaped, bright green leaves, dying back before flowering, and umbels of small, star-shaped, pink or purple flowers in early summer.
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0.1m max. spread

0.6m max. height

2-5 years to maturity

Allium siculum (Mediterranean Bells)

A. siculum is a tall bulbous perennial with a crown of bell-shaped flowers that grow green on the outside with lilac-pink markings on the inside.
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0.1m max. spread

1m max. height

2-5 years to maturity

Allium cepa (Onion)

A. cepa is a bulbous perennial with strap-like green leaves cultivated as an edible vegetable.
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0.5m max. spread

0.5m max. height

1-2 years to maturity

Allium stipitatum (Persian onion)

Other names: Allium rosenbachianum, Persian shallot, Tall ornamental onion

A. stipitatum is a bulbous perennial with arching, strap-shaped, grey-green leaves, hairy beneath, and tall, erect stems bearing dense, rounded umbels of tiny, star-shaped, pale lilac flowers in early summer.
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0.2m max. spread

1.2m max. height

2-5 years to maturity

Allium 'Firmament' (Allium 'Firmament')

'Firmament' is a bulbous perennial, with strap-shaped, grey-green leaves. Star-shaped, deep-purple flowers are borne in spherical heads in early summer which are followed by attractive seed-heads.
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0.75m max. spread

0.75m max. height

2-5 years to maturity

Allium serra (Jeweled onion)

Other names: Serrated onion, Pom-pon onion, Allium serratum

A. serra is an erect, bulbous, borderline hardy, deciduous perennial with distinctly patterned bulbs, linear, channeled, mid-green leaves and, in mid- to late spring, slender, upright stems bearing umbels of pink flowers, turning papery with age.
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0.1m max. spread

0.4m max. height

2-5 years to maturity

Allium 'Guardsman' (Salad onion 'Guardsman')

Other names: Spring onion 'Guardsman'

'Guardsman' is a perennial grown as an edible vegetable with stiff, straight, hollow green leaves and white onions that can be harvested from late spring until autumn.
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0.3m max. spread

0.4m max. height

1-2 years to maturity