Veronica are hardy down to around -10C, it is safe to plant them directly outside in spring. They rarely need additional frost protection in winter unless temperatures will likely be below -10C.
— Soak the roots in water for 3-6 hours prior to planting out.
— Plant directly into a clear space in borders in spring. To help them establish quicker, you can pot them up into temporary pots first to plant out later in the season.
— Plant the roots so that they are fully submerged with the buds or crown just below the surface or any top growth exposed.
— Choose a sunny position with free-draining soil. If you are planting in containers, you can use multipurpose or soil-based compost.
— Space the plants 15-20cm apart
— Water-in after planting and continue to water regularly whenever to soil appear to be dry.
— Read further general instructions about planting bare-root perennials