Allium unifolium
American onion bulbs
- Position: full sun
- Soil: fertile, well-drained soil
- Rate of growth: average
- Flowering period: May to July
- Flower colour: pinkish-purple
- Other features: Dried flower-heads are useful for flower arrangements
- Hardiness: semi hardy
- Bulb size: 5+
The flowers on this Allium are quite papery, which means they last longer than many of the other varieties. In spring the first sign of growth is the appearance of the strappy foliage. This has usually died off by the time the flowers appear in late spring. The pinky-purple, bell shaped flowers emerge in clusters of up to 20 at a time on top of single stems. A great plant for an alpine bed or to add colour to the front of a mixed border. - Garden care: Plant bulbs 5cm deep and 5cm apart in clumps or drifts. Avoid excessive soil moisture and split and divide large clumps in autumn or spring.
2 litre pot
within 2-3 days excludes weekends
2 litre pot
within 2-3 days excludes weekends
2 litre pot
within 2-3 days excludes weekends
Alliums

There was a time when alliums were thought of only as vegetables. However, the taller varieties with their huge globe flower heads are now one of the stars of the architectural plant world. The stiff lollipop heads off-setting sharp vertical...
Read full articlePlant spring bulbs
Spring bulbs, such as daffodils and hyacinths, can be planted whenever the soil conditions allow. As a rough guide, cover them with about twice as much soil as the bulb is deep: so that a 5cm (2in) deep bulb would need a 15cm...
Read full articlePlanting bulbs
Bulbs are ideal for anyone who rates themselves as 'keen-but-clueless' because they are one of the easiest plants to grow. Provided you plant them at the right time of year at more or less the right depth, they will reward...
Read full article



a hot spot. This dainty, chive-like allium makes a flower-packed edging and then produces scaly, papery seed heads that rattle.
-