Winter Care for 'Sunny Border Blue' (Veronica) in Minnesota

A Minnesota gardener asks about winter care for 'Sunny Border Blue'—likely Veronica spicata 'Sunny Border Blue' (speedwell).

If It's a Perennial (Veronica)

• Cut back dead foliage to 4 inches above ground after hard frost.
• Mulch with 4 inches of leaves, straw, or pine needles.
• Zone 4 hardy—should survive with mulch.

If It's a Shrub

Need species ID. Flowering shrubs have different pruning times (usually after bloom).

General Rule

Identify the plant precisely. 'Sunny Border Blue' is a popular Veronica cultivar. Treat as herbaceous perennial.