Allium Nigrum pack of 10
Allium nigrum is a striking ornamental onion that blooms beautifully in white with semi-spherical umbels. This sturdy plant flowers in May and June and reaches a height of around 70 cm. Even after blooming, the seed heads remain decorative and add interest to the garden. Allium nigrum is an ideal transitional bloomer between spring and summer flowers.
Specifications
| Type of product | Allium bulbs |
| Number per package: | 10 Allium bulbs |
| Suitable as a cut flower | Yes |
| Suitable as pot plant | Yes |
| Attacts bees and butterflies | Yes |
| Perennial | Yes |
| Planting site | Sun or semi-shadow |
| Planting time | September-December |
| Flowering time | May-June |
| bulb size (circumference) | 10-12 cm |
| Height | Extra tall >65 cm |
Tips
Alliums – also known as ornamental onions – are true eye-catchers. Their large, globe-shaped flowers on tall stems create a real wow-effect in your garden or pots. They bloom richly in May and June – just between spring and summer flowers – and remain decorative even after flowering.
✔ Easy & reliable: Plant them in autumn and enjoy spectacular blooms year after year – even without green fingers
✔ Attract bees & butterflies: Alliums are rich in nectar and help support a healthy, lively garden
✔ Perfect to combine: Add structure and height – beautiful when paired with perennials and ornamental grasses that subtly hide the fading foliage
✔ Great for pots & borders: Whether in large containers or straight into the ground – Alliums always steal the show
✔ Sustainable & hardy: They return every year with very little care
How to plant & care for Alliums
✔ Planting depth: Three times the height of the bulb
✔ Location: Sunny and open – the more sun, the better they bloom
✔ Soil: Well-drained soil – better a bit dry than too wet
✔ Watering: Only at planting and during dry spells
✔ After flowering: Let the foliage die back completely before removing – this allows the bulb to recharge for next year
✔ Overwintering: Alliums are fully hardy – no need to lift the bulbs
Alliums bring colour, height and wonder to your garden!
Grow your own happiness – with the power of Alliums.
Alliums – also known as ornamental onions – are true eye-catchers. Their large, globe-shaped flowers on tall stems create a real wow-effect in your garden or pots. They bloom richly in May and June – just between spring and summer flowers – and remain decorative even after flowering.
✔ Easy & reliable: Plant them in autumn and enjoy spectacular blooms year after year – even without green fingers
✔ Attract bees & butterflies: Alliums are rich in nectar and help support a healthy, lively garden
✔ Perfect to combine: Add structure and height – beautiful when paired with perennials and ornamental grasses that subtly hide the fading foliage
✔ Great for pots & borders: Whether in large containers or straight into the ground – Alliums always steal the show
✔ Sustainable & hardy: They return every year with very little care
How to plant & care for Alliums
✔ Planting depth: Three times the height of the bulb
✔ Location: Sunny and open – the more sun, the better they bloom
✔ Soil: Well-drained soil – better a bit dry than too wet
✔ Watering: Only at planting and during dry spells
✔ After flowering: Let the foliage die back completely before removing – this allows the bulb to recharge for next year
✔ Overwintering: Alliums are fully hardy – no need to lift the bulbs
Alliums bring colour, height and wonder to your garden!
Grow your own happiness – with the power of Alliums.
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