— Stachys are fully hardy and can be planted directly outside in spring, there is no need to protect them from frost over winter.

— Soak the roots in water for 3-6 hours prior to planting.

— Either pot up your bare roots to grow on for a few months before planting out – this allows them to establish some growth without competition – or plant them directly into a clear, well-dug area in borders.

— Plant the roots so that they are fully submerged with the crown or buds just below the surface. Any emerging leaves or top growth should be left exposed.

— Choose a position in borders or containers in full sun or partial shade.

— Space the plants 15-20cm apart

— Water-in after planting and keep hydrated when in growth in the first year.

— Cut stems down to 3cm above soil level in autumn.

— Read further general instructions about planting bare-root perennials