number : 6 tot 9 per m2
- little groups of 3 to 10 plants (B) - groups of 10 to 20 plants, even more (C)
Plant description
Medicinal herb with strong growth habit, with sturdy stems up to 25 cm with large spherical screens . All this over a nice dollop of finely incised leaves. For sunny, dry spots these long-lived plants are ideal.