Eryngium alpinum
'BLUE STAR' ALPINE SEA HOLLY
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This Blue Star Sea Holly is likely the bluest of all! Alpine Sea Holly plants generally reaches about 30-70 centimetres (12-28 in) in height, with a maximum of 100 centimetres (39 in). The basal leaves are oval or heart-shaped. The blue flowers occur in July through September. Stems are erect and strong.
This plant is native to Austria, Liechtenstein, Croatia, France, Switzerland, Italy, and Slovenia. It grows in subalpine scrub, rocky areas and wet pastures, preferably in limestone, at an altitude of 1,500-2,000 metres (4,900-6,600 ft) above sea level.
Flowers of Eryngium alpinum attract honeybees and bumblebees. Alpine Sea Holly is cultivated as an ornamental plant for its blue and purple flowerheads. It requires dry, well-drained soil and full sun.
Type: Hardy perennial
Height: Up to 70 cm, 28"
Location: Sun
Hardiness zones: 4-8
Seeds per packet: 10
Surface sow as light aids germination. Water the seeds in. Keep continuously moist. Temperature 20-22 C, 68-72 F. Germinates in 10-30 days.
Eryngium alpinum
'BLUE STAR' ALPINE SEA HOLLY
- Unit price
- / per
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This Blue Star Sea Holly is likely the bluest of all! Alpine Sea Holly plants generally reaches about 30-70 centimetres (12-28 in) in height, with a maximum of 100 centimetres (39 in). The basal leaves are oval or heart-shaped. The blue flowers occur in July through September. Stems are erect and strong.
This plant is native to Austria, Liechtenstein, Croatia, France, Switzerland, Italy, and Slovenia. It grows in subalpine scrub, rocky areas and wet pastures, preferably in limestone, at an altitude of 1,500-2,000 metres (4,900-6,600 ft) above sea level.
Flowers of Eryngium alpinum attract honeybees and bumblebees. Alpine Sea Holly is cultivated as an ornamental plant for its blue and purple flowerheads. It requires dry, well-drained soil and full sun.
Type: Hardy perennial
Height: Up to 70 cm, 28"
Location: Sun
Hardiness zones: 4-8
Seeds per packet: 10
Surface sow as light aids germination. Water the seeds in. Keep continuously moist. Temperature 20-22 C, 68-72 F. Germinates in 10-30 days.