Eryngium amethystinum Seeds (Sea Holly)
Eryngium amethystinum, often called “Amethyst Sea Holly,” is a perennial wildflower renowned for its striking appearance. It features cone-shaped, amethyst-blue flower heads surrounded by spiky, silver-blue bracts, resembling thistles. This hardy plant thrives in well-drained soil and full sun in USDA hardiness zones 4-8. Mature plants reach heights of 2-3 feet, making them suitable for borders and cutting gardens. Eryngium amethystinum seeds are available for propagation, attracting pollinators like bees and butterflies with their unique, long-lasting blooms and adding a touch of vibrant color and texture to garden landscapes.
Growing Eryngium amethystinum from Seed
- Growth cycle: Perennial
- Watering: Light
- Sunlight: Full Sun
- Suitable climates: Marine West Coast, Mediterranean, Humid Subtropical, Tropical Wet, Tropical Wet & Dry, Arid
- Where to grow: Outdoors
- Flower color: Blue
Germinating Sea Holly Flower Seeds
To germinate Eryngium amethystinum seeds, stratify them in the refrigerator for 2-4 weeks. Then, sow the seeds on well-draining soil, lightly pressing them into the surface. Maintain soil moisture and provide full sun. Germination typically occurs in 3-4 weeks.
We source all of our Eryngium amethystinum seeds from a small greenhouse facility based in southeastern Maine and store them in a dark, temperature-controlled environment before shipment. You’ll find that our fresh Sea Holly seeds are much easier to germinate than the mass-produced packets of flower seeds found in stores! If you have any trouble growing Sea Holly seeds, we’re happy to send you additional gardening tips. In the (unlikely) event that your Eryngium amethystinum seeds do not germinate at all, we’ll give you a full refund, no questions asked.
We offer this variety on Etsy, eBay, and Amazon, as well!
Shipping & returns
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