BLUE VERVAIN, AMERICAN Verbena hastata
Attractive for butterflies and other pollinators. Blue flowers suitable for natural landscaping. Use for low maintenance plantings. Moderate self-sowing at suitable locations. Enjoys a damp location or average soil, but not overly dry. Flowers the first year from an early sowing.
Height: 120 cm, 47"
Type: Perennial
Hardiness zones: 3-8
Location: Sun or part shade
Seeds per pack: 30
Germination: These perennial seeds germinate at different times over a long period. Plant your seeds just under the surface of a sterile seed-start mix, water in, and then place at 5°C (41°F) for several weeks. A fridge can be used for this by first covering the container or seeds with plastic to retain moisture. They will not likely germinate in the fridge. After several weeks then bring the container to room temperature for them to germinate. The seedlings can appear from 3-10 weeks after the warming period. Constant moisture must be maintained. Keep out of direct sun until after germination.