General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun
Water Preferences: Mesic
Dry Mesic
Dry
Minimum cold hardiness: Zone 4a -34.4 °C (-30 °F) to -31.7 °C (-25 °F)
Maximum recommended zone: Zone 8b
Plant Height: 12 inches
Plant Spread: 8-10 inches
Leaves: Unusual foliage color
Flowers: Showy
Flower Color: Blue
Flower Time: Late spring or early summer
Summer
Late summer or early fall
Underground structures: Taproot
Suitable Locations: Beach Front
Xeriscapic
Uses: Cut Flower
Dried Flower
Wildlife Attractant: Butterflies
Resistances: Deer Resistant
Drought tolerant
Salt tolerant
Propagation: Seeds: Self fertile
Other info: Self sows aggressively
Pollinators: Beetles
Moths and Butterflies
Flies
Bees
Containers: Suitable in 1 gallon
Suitable in 3 gallon or larger
Needs excellent drainage in pots
Miscellaneous: Tolerates poor soil

Image
Common names
  • Sea Holly

Photo Gallery
Location: Vaughan, ON, Canada (Zone 5b)
Date: 2012-07-04
Location: Vaughan, ON, Canada (Zone 5b)
Date: 2014-07-21
Location: Bethpage, TN
Date: 2017-06-30
Location: KALAMA WA
Date: 2017-08-06
  • Uploaded by Joy
Location: Vaughan, ON, Canada (Zone 5b)
Date: 2012-07-01
Location: Ann Arbor, Michigan
Date: 2023-06-26
Collage
Location: KALAMA WA 
Date: 2016-06-22
  • Uploaded by Joy
Location: KALAMA WA
  • Uploaded by Joy
Location: Riverton, Utah, United States
Date: 2022-07-25
Location: KALAMA WA
Date: 2016-06-03
  • Uploaded by Joy
Location: Concord, NC zone 7
Date: 2016-05-15
Starting to show more blue
Location: KALAMA WA
  • Uploaded by Joy
Location: Concord, NC zone 7
Date: 2016-05-03
New plant in my garden.
Location: Hornbaker's Gardens, Princeton, IL
Date: 2015-09-12
Location: KALAMA WA 
Date: 2016-06-22
  • Uploaded by Joy
Location: KALAMA WA
Date: 2016-05-08
  • Uploaded by Joy
Location: KALAMA WA
Date: 2016-06-08
  • Uploaded by Joy
Location: Pembroke, GA
Date: 2016-08-21
Photo courtesy of Santa Rosa Gardens. Used with permission.
Comments:
  • Posted by BookerC1 (Mackinaw, IL - Zone 5a) on Oct 22, 2015 1:13 PM concerning plant:
    This plant, also known as a Sea Holly, bears strange and spiky purplish blossoms. It thrives even in poor soil and hot, dry conditions. Even when not in bloom, the serrated, wavy leaves arising in a rosette pattern from a central tap root are interesting and can provide a textural contrast in the border.

    The blossoms are long-lasting as cut flowers, and a real conversation piece in a bouquet!
  • Posted by DebraZone9 (California - Zone 9b) on Nov 29, 2021 12:27 AM concerning plant:
    This plant self sows so aggressively here in California zone 9B that I pulled it out, and dug up or pulled all the new ones from gazillion seeds it dropped, and threw them all in the trash before they had a chance to spread further! The flowers are unique, but not that showy or exciting compared to the beautiful and well behaved Eryngium "Big Blue".
Plant Events from our members
MissMew On July 1, 2018 Obtained plant
Suzanne
christine2 On May 11, 2023 Transplanted
Moved to south end of Pool bed
christine2 On May 16, 2022 Obtained plant
3GG
dnrevel On June 26, 2023 Potted up
Potted up with Senicio for a Father's Day planter in front of the porch.
dnrevel On June 20, 2023 Obtained plant
Purchased at Produce Station for a Father's Day planter in front of the porch.
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