• Allium Caeruleum
1 1

Allium Caeruleum

  • Globe-shaped sky-blue flowers in early summer
  • Loved by bees and butterflies
  • Perfect for adding height and texture to borders
  • Low-maintenance, hardy, and drought-tolerant

PRE ORDER Estimated Shipping date: Mid - Late September

Bulbs
£3.99
£3.99
Tax included. Shipping calculated at checkout.

Allium caeruleum is a summer-flowering bulb known for its vivid sky-blue globe-shaped blooms. Each spherical flowerhead is made up of tiny star-shaped florets that add structure and brilliance to borders. An eye-catching choice for gravel gardens or perennial beds, and a favourite with UK gardeners sourcing from a reliable online plant nursery.

Pot sizes explained

At Newlands Nursery we grow and sell plants in a variety of different sizes, from small starter plants up to planted containers. 

We know it can be tricky to picture the size of each plant. This page gives you an idea of the size of the plants we are sending out.

Please keep in mind that plants vary from one season to the next. The size of the plant refers to the pot or plug it is grown in, rather than the height of the plant, unless specifically mentioned on the plant page. 

Picture of plug plant size

Starter Plant (Plug Plant)

Plug Size: 2cm by 4cm. Our most popular size. This is often the most economical way of buying plants and is a great way to get a head start on the season. Generally this size is best to be potted up before planting out.
Picture of Jumbo plug plant

Jumbo Plug

Plug Size: 6cm by 7cm. A fantastic alternative to a 9cm pot and saves on plastic too. The plants in this size are well established and give you a head start. This size is perfect for planting straight into containers and baskets as well as the garden.
Picture of 9cm pot

9cm pot

Pot size: 9cm by 9-10cm. This size hold some well established plants, some of which maybe around 1 year old. We sell most of our ranges in this size and most of the plants sold in this size, are established enough to be planted straight outside.
Picture of 13cm or 1 litre pot

13cm or 1 litre pot

Pot size: 12-13cm by 12-15cm Currently our largest size of plant, with the exception of our planted containers. Many of our House Plants are available in this size, as well as some special collections and varieties.

    Allium Caeruleum
    Planting Calendar
    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec
    Jan
    Yes
    Feb
    No
    Mar
    No
    Apr
    No
    May
    No
    Jun
    No
    Jul
    No
    Aug
    Yes
    Sep
    Yes
    Oct
    Yes
    Nov
    Yes
    Dec
    No
    Flowering Calendar
    Jan
    Feb
    Mar
    Apr
    May
    Jun
    Jul
    Aug
    Sep
    Oct
    Nov
    Dec
    Jan
    No
    Feb
    No
    Mar
    No
    Apr
    Yes
    May
    Yes
    Jun
    Yes
    Jul
    Yes
    Aug
    Yes
    Sep
    No
    Oct
    No
    Nov
    No
    Dec
    No

    Allium Caeruleum - Plant information

    Size: Height: 60cm. Spread: 10–15cm.

    Position: Needs full sun to thrive. Best placed in sunny borders, gravel gardens, or naturalistic planting schemes.

    Feeding etc: Feed with a potassium-rich fertiliser in early spring. Allow the leaves to die back naturally after flowering to feed the bulb for next year.

    Care: Plant bulbs in well-drained soil in autumn, around 8–10cm deep. Avoid waterlogged conditions, especially in winter.