Veronica spicata incana – Spiked speedwell (eastern Europe to Siberia)
(= V. incana)
Habit: Flat, rosette-like carpets with upright inflorescences, spreading lawn-like with runners.
Size: Carpet of leaves 10-20 cm, inflorescences 25-35 cm high.
Flowers: Small funnels, dark blue in slender spires; June to July.
Leaves: Semi-evergreen, elongated elliptical or lanceolate, silvery white when shooting, then silvery grey.
Demands: Sun; light shade possible but leaf rosettes become loose; tolerates heat, likes warmth, frost hardy.
Soil: Dry to moderately dry, sensitive to winter dampness; well-drained, not too nutritious, loamy sand, gravel.