Eryngium bourgatii 'Picos Blue'PBR
sea holly 'Picos Blue'
'Picos Blue' is a larger and more intensely blue cultivar than is typical of the species. Leaves are grey-green with white veining and flowers an intense blue with a starry, thistle-like form. Usually reaches 60cm in height
Size
Ultimate height
0.5–1 metresTime to ultimate height
2–5 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green Grey Silver | |||
|---|---|---|---|---|
| Summer | Blue Green | Blue | Green Grey Silver | |
| Autumn | ||||
| Winter |
Position
- Full sun
Aspect
South–facing or East–facing or West–facing
Exposure
Exposed or ShelteredDrought resistance
Yes Hardiness
H5Botanical details
- Family
- Apiaceae
- Native to the UK
- No
- Foliage
- Deciduous
- Habit
- Clump forming
- Genus
Eryngium can be annuals, biennials or perennials with simple or divided leaves, often spiny edged, and cone-like flower-heads often surrounded by an involucre of conspicuous spiny bracts
- Name status
Accepted
How to grow
Cultivation
Grow in dry, well-drained soil that is poor to moderately fertile. Full sun is essential as is protection from winter wet
Propagation
For home use, propagate by root cuttings in late winter
Suggested planting locations and garden types
- Coastal
- Gravel garden
- Cottage and informal garden
- Mediterranean climate plants
- Cut flowers
- Flower borders and beds
- Wall side borders
Pruning
Although you can cut back flower stems after flowering the seedheads are a very attractive feature so are usually left over winter
Pests
May be susceptible to leaf and bud eelworms, and slugs and snails
Diseases
May be susceptible to root rot and powdery mildews
Get involved
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