Allium 'Ambassador'
Available to order from July 2025
Nijssen Tuin & Bulbs Heemstede | Official site of Peter C. Nijssen
Allium, a genus of plants belonging to the onion family, has enjoyed a high degree of popularity for many years. These plants are not only loved for their ornamental value, but also for their ease of use and diversity. Allium plants are incredibly popular and for good reason. They offer a wide variety of shapes, sizes and colours that enrich any garden design. Large purple balls, delicate white flowers or ornamental onions with unique shapes, there is always an Allium that suits your garden design. And the nice thing is, the variety of species and cultivars is constantly growing, with a flood of new species.
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
Available to order from July 2025
The genus Allium probably includes more than 1,000 species and cultivars. This plant is naturally spread across the Northern Hemisphere and is common in Central Asia, the countries around the Mediterranean and western North America. Allium grows mainly in these areas because of the favourable climate and soil conditions. However, we also find some wild Allium species in the Netherlands, such as the sage garlic (Allium sativum).
The diversity in the Allium genus is truly astonishing. Many original and cultivated species have a bulbous base that varies from small (about 3 cm) to large sizes of up to 40 cm. These bulbs store nutrients and ensure a long flowering period, which makes the Allium ideal for use in the garden. In addition, there are species with a thickened root base, also called a 'shaft', which are also suitable for naturalisation and long-lasting flowering.
Alliums can be roughly divided into two main groups: small bulbous and large bulbous Alliums. Smaller Alliums and varieties with thickened roots are very suitable for naturalisation and grow well in a natural environment. Larger species, such as the giant onion (Allium giganteum), can remain in the ground for several years, although the flowering quality may decrease over time. These larger bulbs will last the longest in permeable sandy soil.
Caring for Allium bulbs is relatively simple, but there are a few important points to consider. If you notice that the flowers are getting smaller over the years, you may want to consider removing the bulbs from the ground after flowering. To preserve them, it is important to store them at a temperature of around 23-25 degrees Celsius. This prevents them from drying out and ensures that the bulbs retain their vitality. Replant the bulbs in November, preferably in a different location, to prevent diseases.
Alliums like a sunny location and well-drained soil. It is advisable to plant the bulbs in the autumn, so that they can flower in the spring or early summer. For long-lasting flowering and a stronger plant, it is advisable to plant the bulbs a few centimetres deep. For large-bulb Alliums such as ornamental onions, a planting depth of around 10-15 cm is ideal.
Yes, many Allium species do very well in the Dutch climate. Wild varieties such as sage garlic can adapt well to local conditions.
Most large-bulb-shaped Alliums can remain standing for several years. However, if flowering decreases, it is advisable to plant the bulbs in a different location.
Allium is a versatile plant that is incredibly popular, which, thanks to its various colours, shapes and sizes, is an enrichment for any garden. With the right care, these plants can flower for years and provide a beautiful spectacle of colours.
Would you like to order Alliums online at Nijssenbulbs? Take a look at our extensive range. If you would like help or advice with this, please contact us without obligation by calling or emailing.