Northern Wildflowers Vervain Blue Pkg.

Over 200 seeds per pack, covers 30 ft²

Height:  2-5 feet tall
Plant in:  Full Sun in Medium to Moist Site
Blooms:  July to September
Zone:  3-8
 
Blue Vervain (Verbena hastata) is a unique, eye-catching beauty in any garden. It grows quickly from seed and requires little care to maintain. Blue vervain will survive in dry sites; however, the plant will be smaller and bear fewer flowers. Note that seeds are very small.
Wet and cold stratification is required. Mix seeds with moist substrate (vermiculite, perlite or moss) and place in a plastic bag and refrigerate for 6-8 weeks. Sow seed at soil surface.

Do not let seedlings dry out while they are establishing.

OR

Sow directly outdoors in late fall to overwinter.