Blue Sea Holly, Flat Sea Holly

Blue Sea Holly, Flat Sea Holly

Eryngium planum 'Blue Hobbit'

This broadleaf evergreen holly is valued for its ornamental fruit that persists into winter provides colour and food for overwintering birds.

  • Ornamental berries develop in autumn and persist through winter, providing colour in the dormant landscape and food for birds.
  • Male and female plants are needed for berry production; confirm pollination requirements at purchase.
  • Compact habit, reaching 30 cm at maturity; tolerates wet soils and partial shade better than most ornamental shrubs.
  • Best in full sun with moist, average, dry, well-drained soil.
Size
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Plant Characteristics

Sunlight
Full sun
Soil Moisture
Well-drained, Moist, Dry, Average
Drought Tolerant
Hardiness Zone
3 – 3
Mature Height (meters)
0.2 – 0.3
Mature Spread (meters)
0.2 – 0.3
Growth Rate
Medium
Flower Colour
Blue
Foliage Colour
Green
Bloom Time
SummerFall
Habit
Compact
Deer Resistant
Rabbit Resistant
Pollinator Friendly
Landscape Uses
Border, Rock garden
Growing & Maintenance Tips
Grows best in a dry, sandy, well-drained soil, in full sun. Has a large taproot and once established, does not like to be moved. Eryngium may need staking and lose some of their colour if planted in soils that are too fertile or shady.
Notes
Also referred to as Blue Eryngo, Sea Holly.

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