Eryngium (Sea Holly) ‘Big Blue’

Where to Buy

US & Canada|UK & Ireland


Big Blue certainly lives up to its name! It is a big, bold garden plant that makes an impact in any garden. Big Blue’s 4″/ 10 cm flowers blooms in June on thick, sturdy stems. Electric-blue flower color extends well down onto the stems. Green, spiky foliage on erect, candelabra-shaped plants. Tremendous garden presence that’s impossible to overlook. Great for middle of border. Especially impressive in mass plantings. Novel container specimen and striking cut flower. Excellent larger companion for Eryngium ‘Sapphire Blue’. Comes to Rozanne® and Friends from Myerscough College, England.


Eryngium (Sea Holly) 'Big Blue'

Approx. Height


Approx. Spread



Long blooming period. Impressive in cut flower displays. Use as a dried flower too. Attracts butterflies.

Aftercare Instructions

Grow in any well-drained soil. Excellent for coastal gardens. Cut back stems to ground level at the end of the flowering period.


Flowering Time

July to September


Full sun

Approx. Winter Hardiness

US Hardiness Zones 5-9. Hardy down to -20F/-29c