General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun
Water Preferences: Dry Mesic
Dry
Minimum cold hardiness: Zone 5a -28.9 °C (-20 °F) to -26.1 °C (-15 °F)
Maximum recommended zone: Zone 9b
Plant Height: 24-32 inches
Flowers: Showy
Flower Color: Blue
Bloom Size: 1"-2"
2"-3"
Flower Time: Summer
Underground structures: Taproot
Uses: Cut Flower
Dried Flower
Wildlife Attractant: Bees
Resistances: Drought tolerant
Propagation: Seeds: Other info: Sow seeds in spring or fall
Propagation: Other methods: Cuttings: Root
Pollinators: Wasps
Bumblebees
Bees
Containers: Needs excellent drainage in pots
Miscellaneous: Tolerates poor soil
With thorns/spines/prickles/teeth

Image
Common names
  • Sea Holly

Photo Gallery
Location: My garden in Ontario, Canada
Location: Akuyreri Botanical Garden, Iceland
Date: 2011-08-03
A planting at the botanical garden, not sure which species
Location: my garden in Dawsonville, GA (zone 7b north Geogia mountains)
Date: 2022-05-24
Uploaded by clintbrown
Location: my garden in Dawsonville, GA (zone 7b north Geogia mountains)
Date: 2017-05-30
Location: St Louis Lily Show 2017
Date: 2017-07-01
part of an arrangement with lilies
Location: Opp, AL  Z8b
Date: 2023-05-13
Location: my garden in Dawsonville, GA (zone 7b north Geogia mountains)
Date: 2021-06-10
Location: Maine
Date: 2014-07-12
Location: Beautiful Tennessee, my garden
Date: 2018-05-18
grown from seed
Location: Coastal San Diego County 
Date: 2019-03-16
Location: Emigsville PA
Date: 2015-08-20
Location: my garden
Date: 2023-05-17
This plant is tagged in:
Image

Comments:
  • Posted by LoriMT (Dawsonville, GA - Zone 8a) on May 25, 2022 7:12 AM concerning plant:
    I planted Eryngium about 8 years ago, and it thrives in my zone 7b North Georgia Mountains garden. The plant is a pollinator magnet, and it freely self-seeds into seedlings with long tap roots (needed to hold it up on the wind-swept coastline of its native habitat). The flowers and leaves are prickly like thorns, so plant at the back of a border to avoid being pricked by this spiny plant.
  • Posted by KFredenburg (Black Hills, SD - Zone 5a) on Jun 10, 2020 1:34 PM concerning plant:
    The stuff, sculptural leaves and flowers of sea hollies make them superb specimen plants. Use them as accents in a border or in a sunny rock garden. They look good in a border composed of silver, white or gray-leaved plants. They make striking cut flowers.

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