Blue Sea Holly Seeds - Heirloom Flower Plant for Home Gardens

Blue Sea Holly Seeds produce Eryngium plants known for their distinctive blue flower heads, spiny foliage, and upright growth habit. Sea Holly is commonly grown in borders, rock gardens, coastal-style landscapes, and naturalized gardens. It performs best in full sun, well-draining soil, and moderate watering once established.

Features

• Produces distinctive blue flower heads
• Develops spiny, ornamental foliage
• Upright perennial growth habit
• Suitable for borders and rock gardens
• Performs well in full sun
• Tolerates dry conditions once established

Specifications

• Scientific Name: Eryngium spp.
• Common Name (US): Blue Sea Holly, Sea Holly
• Seed Type / Variety: Flower Seed
• Growth Habit: Upright herbaceous perennial
• USDA Zones: 4–9
• Planting Season: Spring or Fall
• Growing Season: Spring to Fall
• Sowing Season: Spring or Fall
• Sowing Season Months: March–May or September–October
• Germination: 14–30 days under suitable conditions
• Sunlight Requirements: Full Sun
• Soil Requirements: Sandy, well-draining soil
• Watering Needs: Moderate watering; allow soil to dry between waterings once established
• Mature Plant Size: 18–36 in tall and 12–24 in wide
• Plant Spacing: 12–18 in apart