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Eryngium tripartitum

Eryngium tripartitum
Basal leaves are rounded and gently serrated
sea holly
Developing flower, before the blue color comes in
Eryngium tripartitum

Common name sea holly
Family apiaceae
Life cycle perennial (Z5-8)
Flowers blue (July)
Size 3'
Light sun
Cultural notes well-drained soil

This was probably the plant that got the most "What's that?" enquiries a garden tour we hosted a few years ago. It looks much like several other sea hollies in bloom, with its metallic blue stems, bracts, and flowers. The leaves are different, though - smaller and more rounded than our Eryngium planum. Some years, this one holds up straight better (although it's not immune to flopping), so I'm liking this one (acquired at the HPS/MAG plant sale quite a few years ago) quite a bit.

sea holly

We left this plant behind in our Pennsylvania garden (and wish it well); we don't grow it in Houston.

Read about all the eryngium species in our garden

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PlantLinks to other web pages about Eryngium tripartitum

Seed-starting details for this plant

  1. Seed from '05 garden. Baggy 35F (8w) - 70F (3w; no G)
  2. Seed from '06 garden. Baggy 35F (13w) - 70F (18d; no G)

Apparently does not set viable seed, even though seeds are as substantial as those of E. planum.

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