Eryngium planum (Flat Sea-Holly)


Botanical Information

FamilyApiaceae
GenusEryngium
Speciesplanum
CategoryPerennials
Pronunciation

Details

USDA Hardiness Zone5-9
USDA Hardiness Ref.
Canada Hardiness Ref.
RHS Hardiness Ref.
Height90 cm
Spread45 cm
Flowering PeriodJuly, August, September, October

Description and Growing Information

PropagationSow fresh seed in containers with germination in 1-2 weeks at 65-75°F (18-23°C).
HabitatCentral and southeast Europe to central Asia.
Leaf DescriptionEvergreen, oblong, toothed, heart shaped, dark green leaves.
Flower DescriptionRound umbels with blue flowers and blue-green bracts on bright blue stems. Seed heads are attractive, so leave on plant for the autumn garden.

Photographs