The Allium bulbs Christophii are bulbs of the Star of Persia, an ornamental onion with huge flower heads up to about 20 centimetres across. Each globe consists of dozens of star-shaped florets in deep purple with a metallic sheen. At 40 to 60 centimetres the plants stay fairly low. Thanks to their sturdy stems they stay upright in wind, and bees and butterflies love to visit them.

The bulbs are size 10/12 and each produce one large flower head. Plant them in the border between perennials, at the front of a sunny bed or in a roomy pot. With 15 bulbs you fill a large pot or create a group that catches the eye straight away, with 30 bulbs you can spread them through the whole border. With 60 or 120 bulbs you plant a large bed or a long strip; because of the big flowers, allow 8 to 12 bulbs per square metre. Combine them with other allium bulbs, such as a taller variety behind them. You will find more greenery for outdoors among our outdoor plants.

When should you plant the Allium bulbs Christophii?

For the Allium bulbs Christophii, autumn is planting time, ideally from mid-October to the end of November. Once the soil is below 10 °C, the bulb forms roots while the foliage stays below ground. Later planting is possible until December, as long as the ground is not frozen. Without winter cold there will be no flowers, so we advise against spring planting.

When do the Allium bulbs Christophii flower?

The Allium bulbs Christophii flower in May and June. A flower head stays in full colour for about three weeks and then slowly turns into a star-shaped seed head that remains decorative into autumn. In a pot or a warm spot flowering starts a little earlier, after a cold spring later. They also look lovely in a vase. The plants return every year.

Care and tips Allium bulbs Christophii

Plant the bulbs pointed end up at a depth of about 10 to 12 centimetres, two to three times the bulb height, and give them 20 to 25 centimetres of space so the large flower heads do not touch. On wet, heavy soil the bulbs rot in winter, so mix in sand or grit. For a pot, choose a roomy one with a drainage hole and a layer of gravel; you will find a suitable one among our outdoor pots and baskets. The foliage discolours around flowering time, so place the bulbs behind low perennials that hide it. Let the leaves die back naturally and give some bulb fertiliser in early spring.

Water needs of the Allium bulbs Christophii

Alliums prefer to be a little dry rather than wet. In the garden rainwater is usually enough; only give extra water if spring stays dry for a long time. In a pot, water about once a week from when the leaves appear, letting the soil dry slightly in between.

Light needs of the Allium bulbs Christophii

Give them the sunniest spot in the garden. In full sun the flower heads grow largest and the purple stays deep in colour. In partial shade they flower, but with smaller heads.

Are the Allium bulbs Christophii toxic?

The Allium bulbs Christophii are mildly toxic if ingested. As members of the onion family, they can be harmful to dogs and cats in particular. Keep the bulbs out of reach of pets and young children. If you have sensitive skin, garden gloves are advisable when planting.

How will my Allium bulbs Christophii be shipped?

Your bulbs are carefully packed and shipped. That way they arrive safely and fresh from the grower.