= Water twice per month or less, once established.
= Water about once per week, once established.
= Water about twice per week, once established.
= Water three days per week, or more.
Use the plant water needs as a guideline. Actual plant water needs will vary for several reasons, including weather conditions, soil type, sun exposure, root depth, wind and elevation. Adjust your watering schedule as needed to meet the plants' needs at your site. Water recent transplants more often than established plants.
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Eryngium planum 'Blaukappe'
low
blue
summer
15 to 24 in.
10 to 15 in.
No
species is native to Europe
sun
USDA zones 5-8
hardy to 6,500 ft.
Sea holly is a perennial flower grown for its amazingly geometrical flowers. The shimmery blue flowers are composed of a cone surrounded by a ring of stiff, narrow bracts. The leaves grow as a basal rosette of heart-shaped leaves.
After flowering, the seedhead forms a round, textured ball, adding extra interest to the landscape.
Sea Holly has grown successfully for many years at the Xeriscape Garden. Some of the areas where is grew have been renovated recently. It is worth considering if you like the unusual flowers.
Cut old stalks and leaves to ground level in late winter.
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