Giant Sea Holly (Eryngium giganteum)

Common names:
Give a thumbs up Giant Sea Holly
Give a thumbs up Miss Willmott's Ghost

General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Biennial
Sun Requirements: Full Sun
Minimum cold hardiness: Zone 4a -34.4 °C (-30 °F) to -31.7 °C (-25 °F)
Maximum recommended zone: Zone 7b
Plant Height: 2-4 feet
Plant Spread: 1-3 feet
Leaves: Unusual foliage color
Flowers: Showy
Flower Color: Blue
White
Other: Silvery Blue
Bloom Size: 2"-3"
Flower Time: Summer
Late summer or early fall
Underground structures: Taproot
Suitable Locations: Xeriscapic
Uses: Cut Flower
Dried Flower
Will Naturalize
Wildlife Attractant: Butterflies
Resistances: Deer Resistant
Rabbit Resistant
Propagation: Other methods: Division
Containers: Suitable in 1 gallon
Suitable in 3 gallon or larger
Miscellaneous: With thorns/spines/prickles/teeth

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Photo gallery:
Location: My garden, Calgary, Alberta, Canada; zone 3.Date: 2013-08-12
By growitall
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Location: WashingtonDate: 2016-06-20
By Patty
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Location: Washington 8bDate: 2017-07-13
By Patty
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Location: Howick Hall, Northumberland, UKDate: 2016-06-07
By kniphofia
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Location: RHS Harlow Carr, Yorkshire, UKDate: 2016-08-09
By kniphofia
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By MrsBinWY
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Location: WashingtonDate: 2016-07-04
By Patty
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Location: WashingtonDate: 2016-07-10
By Patty
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Location: RHS Harlow Carr, Yorkshire, UKDate: 2016-08-09
By kniphofia
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Location: WashingtonDate: 2016-07-10
By Patty
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Location: RHS Harlow Carr, Yorkshire, UKDate: 2016-07-27
By kniphofia
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 Photo Courtesy of Select Seeds. Used with permission.
By Joy
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This plant is tagged in:
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Plant Events from our members
MrsBinWY On February 3, 2017 Seeds sown
Milk jug, room temp, seeds from 2016G, 25; gave up on these on 4-24-17
lovesblooms On February 24, 2018 Seeds sown
winter sown
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Discussion Threads about this plant
Thread Title Last Reply Replies
Not E giganteum by kniphofia Jul 20, 2018 10:30 AM 2
Show Us Your Garden 12 (June, 2011) by sandnsea2 Jul 6, 2011 6:05 PM 198

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