100 Rattlesnake Master Seeds – Eryngium yuccifolium Native Prairie Flower

Rattlesnake Master (Eryngium yuccifolium) is a distinctive native prairie perennial known for its unique, globe-shaped flower heads and spiky, yucca-like foliage. This architectural plant adds bold texture and interest to native plant gardens, pollinator habitats, and meadow plantings. Its greenish-white flower clusters appear atop sturdy stems in summer, attracting a variety of pollinators including bees and beneficial wasps.

Rattlesnake Master is a low-maintenance, drought-tolerant species that thrives in full sun and well-drained soils. It is an excellent choice for rain gardens, prairie restorations, and mixed perennial borders where its unusual form and wildlife value can be appreciated.

Plant Features

• Unique spherical flower heads that resemble small globes
• Yucca-like, spiky foliage adds architectural interest
• Attracts pollinators such as bees and beneficial insects
• Tolerant of drought and poor soils once established
• Native to North American prairies

Growing Information

• Botanical Name: Eryngium yuccifolium
• Plant Type: Herbaceous perennial
• Sunlight: Full sun
• Soil: Well-drained, sandy or loamy soil
• Water Requirements: Low to medium; drought tolerant once established
• Growth Habit: Upright, clump-forming
• USDA Hardiness Zones: 3–8
• Bloom Season: Summer
• Mature Height: 2–4 feet
• Spacing: 18–24 inches apart

Planting & Care

Sow Rattlesnake Master seeds indoors 6–8 weeks before the last frost or directly outdoors in fall. Lightly cover seeds with soil, as they need light to germinate. Keep the growing medium consistently moist but not waterlogged. Germination can be slow and uneven; cold stratification for 30 days may improve results. Transplant seedlings outdoors after the danger of frost has passed, spacing them 18–24 inches apart in a sunny location with well-drained soil.

Once established, Rattlesnake Master requires minimal care. Water regularly during the first growing season to help roots establish, then reduce watering as the plant becomes drought tolerant. Avoid overly rich soils, which can cause floppy growth. Deadhead spent flowers to encourage additional blooms or leave seed heads for winter interest and wildlife.

What's Included

100 Eryngium yuccifolium seeds.