syn hollandicum
A variable species allium flowering with dense 4” balls of pale purple or deep lilac.
Plant in drifts where the natural variations in size, colour, and height can be used to best effect.

Bulb size: 12/14
Flowering: May - June
Height: to 30in 75cm
Position: Plant 4" deep and 6” apart in a sunny border with good drainage. Will seed in favourable circumstances

RHS AGM Syn hollandicum ‘Purple Sensation’
A consistent selected form of the species (aflatunense) with very large heads of rich deep-violet flowers, up to 10cm across, on stiff stems

Bulb size 12/14 cm
Flowering: May - June
Height: to 36in 90cm
Position: Plant 3-4" deep and 6” apart in a sunny position in well drained soil

RHS AGM A Great Dixter favourite. Huge deep purple flower heads to 8in width
A sterile hybrid, so flowers stay for a long time, although will not set seed or dry well.

Bulb Size: 24/+
Flowering: late May-end June
Height: to 40in 100cm
Position: Best in full sun in well drained soil

Burgundy red with a white crest. On good stems. A good cut flower.

Bulb Size: 10/+
Flowering: June-July
Height: to 40in 100cm
Position: Best in full sun in well drained soil

An ornamental form of Elephant Garlic. Dense spherical heads to 2in, white with a pink tinge on long green stems A good cut flower with ornamental seed head

Bulb size: 8/+ cm
Flowering: June-August
Height: to 40in 100cm

Magnificent clusters of white flowers with purple stamens on tall stems with long narrow leaves.
One of the best of the showy white alliums

Bulb Size: 6/+ cm
Flowering: May-June
Height: to 16in 40cm
Position: Best in well drained soil in full sun

Hemispherical heads, a dramatic deep purple

Bulb size: 10/+ cm
Flowers: June
Height: to 36in 90cm
Position: Best in very well drained soil in full sun

 

 

Creamy white flowers with a dark rose violet eye in hemispherical heads on green stems,

Bulb size: 12/+ cm
Flowering:  June/July
Height: to 36in 90cm
Position: Well drained. Full sun

Bright violet-pink fluffy globes on sturdy stems held above the strappy green foliage

Bulb size: 6+ cm
Flowering: May-June
Height: to 16in / 40cm
Position: Plant bulbs 1-2" (5cm) apart and 1.5" (3cm) deep in well-drained soil in sun

RHS AGM (syn A albopilosum)
Strap shaped leaves are followed by the large, star-shaped metallic sheened lilac flower heads up to 20cm across as the leaves start to wither
Seed heads dry well, and are bleached by the sun giving lasting structure, and are interesting for flower arranging / winter decorations

Bulb size: 12/14 cm
Flowering: May - June
Height: to 24in 60cm
Position: Plant in a sunny well drained soil, 8" apart to avoid overcrowding the heads and 3-4" deep.  May self sow producing flowering plants in 4 years

Tallest of the large headed alliums, long and later blooming, masses of successional small bright purple flowers in an 8in (20cm) ball shaped head.

Bulb size 20/24 cm
Flowering: June
Height:  to 60in 150cm
Position: Plant the big bulbs in sun in fertile well drained soil, about 6" deep and 18" apart.

RHS AGM
Giant rounded clusters of starry light reddish-purple flowers on strong stems.

Bulb size 20/24 cm
Flowering: June
Height:  to 50in 120cm
Position: Plant the big bulbs in sun in fertile well drained soil, about 6" deep and 18" apart.

RHS AGM Early flowering so good for extending the season.
Reddish-violet flowers tipped with white in large heads. Bred for cutting, with strong stems

Bulb size: 14+ cm
Flowering: May
Height: to 30in 75 cm
Position: Plant bulbs 4-5" deep in full sun and in well drained soils

A new hybrid between A atropurpureum and A. schubertii. With the former’s dark magenta colouration and domed form and the latter’s varied length flowers. The heads are up to 10in across and held on strong stems

Bulb size: 12/+ cm
Flowers: June
Height: to 40in 100cm
Position: Plant bulbs 4-5" deep in full sun and in well drained soils

Dark metallic purple shades a hybrid of A cristophii and A. atropurpureum

Bulb size: 10/+ cm
Flowering: June
Height: to 28in (70cm)
Position: Plant bulbs 4-5" deep in full sun and in well drained soils

 

syn Allium multibulbosum
Creamy white flowers with green/black central ovaries in flattened hemi-spherical heads on stiff medium height stems

Bulb size: 12/+ cm
Flowering: June
Height: to 24in 60cm
Position: Plant 3-4 deep in sunny well drained soil 4-6" apart. They need a dry summer rest to re flower.

A form of a nigrum, with true pale pink domed heads

Bulb size: 10/+
Flowers: May-June
Height: to 36in 90cm
Position: Plant 3-4 deep in sunny well drained soil 4-6" apart. They need a dry summer rest to re flower.

RHS AGM An Allium cristophii x Purple Sensation hybrid offering the best of form and colour.
Deep amethyst purple 6in globes on strong stems, it bulks up well.

Bulb Size: 10/+
Flowering: May -June
Height: to 36in 90cm
Position: Plant 3-4 deep in sunny well drained soil 4-6" apart. They need a dry summer rest to re flower.
Position: Best in full sun in well drained soil

syn Nectaroscordum siculum
Loose umbels of drooping bell shaped brown green and red flowers on tall stems
After fertilisation the seed heads dry erect, prized for flower arranging

Bulb Size: 10/+
Flowering: May - June
Height: to 24in 60cm
Position: Hardy bulb for partial shade and moist, well-drained ground, Easy to flower even in clay soils where it will often naturalise before seeding around

Drumstick Allium / Roundheaded Leek
Pear shaped tight umbels on tall stems, starting green but turning dark maroon red from the tip

Bulb Size: 6/+
Height: to 36" (90 cm)
Flowers:  July - August
Position: :Plant 3” deep in full sun in well drained soil and 3-4" apart

Syn Toabago
A hybrid of A schubertii and A atropurpureum, gives an exploding firework effect in dark purple on tall stems.

Bulb size: 10/+.
Flowering: June.
Height: to 75 cm.
Position: Dry sheltered sunny with good drainage.

 

RHS AGM
Impressive hybrid of Allium stipitatum and Allium aflatunense with large dense spherical heads (to 4in) of pure white flowers on strong green stems

Bulb size: 20+ cm
Flowering: May - June
Height: to 48in 120cm
Position: Plant.4-5" deep in a sunny soil and some 12" (30cm) apart. Easy for a well-drained sunny corner. Bulks up from offsets

 

Very tall, later flowering, scented with purple and white florets, giving a halo effect.

Bulb Size: 12/+
Flowering: July- August
Height: to 80in 200cm
Position: Best in full sun in well drained soil

RHS AGM
Large, loose spiky silver-lilac heads up to 8in wide on sturdy stems

Bulb size 24/+ cm
Flowering: from mid-June
Height: to 36in 90cm
Position: Plant in a sunny position in good well drained soil-6" deep and at least 18" apart. Although vigorous and reliable re-flowering regularly, bulbs will split over time to produce new bulbs, which needed time to bulk up to flowering size

RHS AGM
Sweetly scented metallic violet blooms in 10 cm dome shaped heads. A good cut flower.

Bulb Size: 10/+
Flowering: May - June
Height: to 26in 65cm
Position: Plant 3” deep in full sun in well-drained soil and 6" apart