Veronica - Skyler Series

The Skyler series does not need a cold winter period, unlike other Veronica longifolia cultivars. It will flower the first year from planting. Cut to the ground, and it will generally send out an additional flush of flowers. Depending on location you may harvest 2-4 flushes of flowers per year. It is fully hardy. In its second and third years, you will see many more stems emerge as the plant spreads. 

Images courtesy of : Danzinger