Plants by mail order since 1984, over 4100 plants online today!
- Shop Now
- Burncoose Specialities
- This Month
- Offers & Promotions
- RHS Chelsea Flower Show 2022
- Engage With Us
- Information, Help & Advice
- About Us & Our Services
- Terms & Conditions
- Log In / Register

ERYNGIUM x tripartitum
Commonly known as Sea holly , Tripartite eryngo
Small deep blue thistle flowers
Further Reading....
-
DeciduousNarrowly-oval 3-lobed, toothed, dark-green leaves 6-12cm (2½-5in) long with some spines.
-
BlueDeep blue
-
Height60-90cm (24-36in)
-
Spread50cm (20in)
-
HerbaceousEarly in the year, typically January till end of March, herbaceous plants might be supplied in 9cm pots to ensure timely despatch.Clump-forming, many-branched perennial. Flowers in cones 1-2cm (½-¾in) long with bracts 3.5cm (1½in) long.
-
Hardy - cold winterHardy in most places throughout the UK even in severe winters. May not withstand open/exposed sites or central/northern locations. Plant can withstand temperatures down to -15°C (5°F)
-
Full sunProtect from winter wet.
ERYNGIUM x tripartitum
- Details
- Mature Size
- Tips and Advice
- Goes Well With
- Planting Combinations
- Other Suggestions
- See Also...
-
Additional FeaturesGood to knowWildlife plant - insectsPests & Diseasesroot rot, slugs, snails, powdery mildew.Place of originProbably Mediterranean.
-
HardinessFully hardy
-
Seasonal InterestAutumnSummer
-
Soil ConditionsWell drained, dry, poor to moderately fertile soil
-
WildlifeBee friendlyButterfly friendlyRabbit Resistant
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Eryngium - Growing Guide
Herbaceous Plants - Video Collection
- Dividing Herbaceous Perennials - Video Tip ondemand_video
- Spring Planting Osteospermums - Video Tip ondemand_video
- Dividing Summer Perennials - Video Tip ondemand_video
- Dividing summer flowering Hemerocallis - Video Tip ondemand_video
- Summer propagation - Video Tip ondemand_video
- Self-seeding aquilegia - Video Tip ondemand_video
- Supporting Plants - Video Tip ondemand_video
- Dead heading meconopsis - Video Tip ondemand_video
- Dead heading Delphiniums - Video Tip ondemand_video
- Feeding herbaceous peonies - Video Tip ondemand_video
- Overpotting Problems - Video Tip ondemand_video
60-90cm (24-36in)
|
![]() |
![]() |
50cm (20in) |
Useful extras...

Fertilisers & Feeds - Vitax
Q4 Pelleted Fertiliser
A useful fertiliser suitable for use on a wide variety of plants. Q4 provides all the nutrients and trace elements essential for vigorous growth, abundant flowering and ripening of fruit.
3 options from £6.00

Fertilisers & Feeds - Empathy
Rootgrow mycorrhizal fungi
Recommended by the RHS. Contains Rootgrow™ mycorrhizal fungi. Suitable for all trees and shrubs (except rhododendrons, azaleas, heathers, cranberries and blueberries)
2 options from £6.00