5 Seeds Eryngium agavifolium Agave Leaf Sea Holly Architectural Plant

Eryngium agavifolium, commonly called agave-leaf sea holly, is a striking architectural perennial grown for its rosettes of stiff, spiny-edged, agave-like foliage and its distinctive cone-shaped flower heads. Highly regarded by gardeners for its bold texture and structural form, it makes a dramatic focal point in borders and gravel plantings. This listing is for 5 seeds.
The plants form clumps of evergreen to semi-evergreen sword-shaped leaves, adding year-round interest in mild climates, while in summer sturdy stems rise bearing greenish-white to pale blue cone-like flower heads surrounded by spiny bracts that hold well and suit cutting. It works well in mixed borders, drought-tolerant schemes, gravel gardens, and coastal plantings.
Species: Eryngium agavifolium
Type: Herbaceous perennial
Plant_Habit: Clump-forming rosette
Sun: Full sun
Soil: Well-drained, sandy or gravelly
Zones: 6-9
Germination: Cold stratification may improve results; sow on the surface and press in, do not bury deeply
Sowing: Surface sow, keep lightly moist at around 18-22C
Spacing: 45-60 cm
Notes: Tolerates drought and poor soils once established