Eryngium planum

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Blue Sea Holly

 
Plant photo of: Eryngium planum
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Information by: J.J. Neilson Arboretum        Photographer: Susan Frommer

 

Description

Eryngium planum is a perennial. Stem leaves are blue tinted, with three to five lobes or sections. Rounded, 1/2-3/4 in. wide, light blue flower heads are surrounded by narrow blue-green bracts.

 

  • Anatomy

  • Culture

  • Design

Plant Type

Perennial

 

Height Range

1-3'

 

Flower Color

Blue

 

Flower Season

Summer, Fall

 

Leaf Color

Blue Green, Grey Green, Silver, White

 

Bark Color

n/a

 

Fruit Color

n/a

 

Fruit Season

n/a

Sun

Full

 

Water

Medium

 

Growth Rate

Moderate

 

Soil Type

Sandy, Rocky

 

Soil Condition

Poor, Well-drained

 

Soil pH

Neutral, Basic

 

Adverse Factors

n/a

Design Styles

Seascape

 

Accenting Features

Showy Flowers

 

Seasonal Interest

Summer, Fall

 

Location Uses

Perennial Border

 

Special Uses

Filler

 

Attracts Wildlife

n/a

Water Saving Tip:

Apply a 2-3 inch layer of mulch in planting beds to conserve water, suppress weeds, and protect the soil from compaction and erosion.