Allium caeruleum
Blue allium
Also known as Allium azureum
- Height × spread
- 0.6m × 0.2m
- Position
- Full sun
- Hardiness
- Cold to -15C (RHS H5)
- Flowers
- Summer
Availability
Please ask in store about availability
Many plants are seasonal. Call 01234 567890 to check current stock.
About this plant
This charming allium species has blue flowers that catch the eye in the border. The flowers are rounded and about 4cm (1Ìâå_in) across, borne on very slender stalks around 60cm (2ft) in length from a small foliage clump which actually dies back before flowering commences. The recessive colour means that this can be hidden in the border unless it is carefully placed. But the colour is so attractive that it is worth finding a suitable plant offering a colour contrast against which to place it effectively.
- Flower colour
- Blue
- Foliage colour
- Green
- Variegated
- No
- Scent
- No
- Shape
- Fan
- Height
- 0.6m
- Spread
- 0.2m
- Season of interest
- Summer
- Flowers in
- Summer
- Evergreen
- Deciduous
- Garden style
- Small scale garden, Mediterranean garden
- Sun or shade
- Likes full sun
- Soil type
- Gravelly soil, Loam (normal), Sandy soil
- Soil pH
- All types
- Drainage
- Well drained soil
- Hardiness
- Cold to -15C (RHS H5)
- Borders & containers
- Borders
- Use for
- Ground cover, Deer resistant, Rabbit resistant, Bee attraction, Butterfly attraction
- Maintenance
- Easycare – low/no maintenance
- Hazards
- No
AutumnNow
Autumn · Planting
Remove offsets to create new plants
Offsets are small plants or shoots that develop around the parent plant. They should have developed a root system of their own before they are detached. They can be planted directly, or grown in pots if so small they could be 'lost' in the garden.
Spring
Spring - late · Outdoors
Feed with slow release fertiliser
Apply a general purpose slow release fertiliser, spreading it around the root area of the plant as it is coming into growth. (Or apply a liquid feed at regular intervals throughout the growing season.)
This is a simple way to provide a nutrient boost as a single annual procedure.
Spring-Autumn · Outdoors
Water during dry periods
For plants in the ground, when there has been little or no rain for a period of 7-10 days and the soil is dry, give it a deep watering and repeat weekly until there is a downpour of rain. Check plants in pots more frequently, especially in hot weather.
Found in
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