Allium bulbs should be planted in autumn, from September to November, before the ground freezes. This gives them time to form roots over winter and bloom in spring or early summer.

Choose a sunny, well-drained spot. Plant the bulbs about 3 times as deep as the bulb is tall – usually 10-15 cm deep and 15-20 cm apart. Place the bulb pointy end up, water lightly, and leave them over winter.

Most alliums bloom in late spring to early summer, typically from May to June, depending on the variety. Some types bloom a bit earlier or later, but these are the main months.

Possible reasons include:
– Planted too shallow or too deep
– Not enough sunlight
– Overly wet soil causing bulb rot
– Or the bulb may need a year to establish

Some varieties also don’t bloom every year, especially if overcrowded.

Alliums as cut flowers are a niche but growing choice in Polish florists — they are available mainly from May to July, during their natural blooming season. They are not stocked by every florist, but are increasingly popular in modern, architectural, and boho-style arrangements. The most commonly available variety in Polish florists is Allium sphaerocephalon (drumstick allium). Outside the spring-summer season, alliums are rarely available as cut flowers, so it is advised to order them in advance.

Allium belongs to the onion family and can release a mild onion-like scent, particularly when the stems are cut or the water becomes stale. For most people this is barely noticeable, but if you are sensitive to the smell, there are a few simple steps to minimise it: always cut stems under running water rather than in the air, change the vase water every 2 days, keep the vase in a well-ventilated spot, and remove any leaves that would sit below the waterline. Once the stems are in clean water and the initial cut has dried slightly, the scent usually fades significantly.

Allium is an architectural flower with a strong, geometric character — its perfectly spherical globe sits on a tall, bare stem, creating a bold vertical accent that few other flowers can match. Here are the styles and compositions where it works best:
Modern and minimalist — allium's clean, graphic form makes it a natural fit for contemporary arrangements. A monobouquet of alliums in a tall vase is a striking interior statement that needs nothing else.
Boho and natural / wildflower — the drumstick allium (A. sphaerocephalon) in particular works beautifully in loose, meadow-style bouquets alongside grasses, dried elements, lavender, and achillea, adding vertical rhythm and texture.
Garden and cottage style — allium pairs naturally with roses, peonies, delphiniums, and catmint, recreating the feel of an English cottage garden in a vase.

Yes — allium and czosnek ozdobny (ornamental onion) are the same plant. Allium is the botanical genus name, used internationally in florists and gardening. Czosnek ozdobny is the Polish common name, literally meaning "ornamental garlic/onion."