Persicaria

A border often looks its best when something grows through it. Persicaria sends up slender flower spikes among generous green leaves, creating a lively contrast with rounded blooms and softer foliage. Known as bistort, this hardy perennial flowers through much of summer, with many types continuing into autumn. Its closely packed flowers range from pale pink and white to rich red, bringing colour at a time when earlier perennials are beginning to fade.

Persicaria is particularly lovely planted in loose groups, where the stems can mingle with neighbouring flowers rather than stand in a rigid row. Try it among ornamental grasses for a natural, flowing feel, or repeat it along a generous border to carry the same colour through the planting. The flower spikes also offer nectar to visiting bees and butterflies. You may see some bistorts listed under the botanical name Bistorta, but Persicaria remains the familiar name for many gardeners searching for these plants.

Most border Persicaria plants appreciate soil that retains moisture, with sun or partial shade. Water young plants while they establish and give them extra attention during prolonged dry spells, especially in lighter soil. Allow enough room for their mature spread: a well-placed clump can fill a gap beautifully as it grows. Browse Persicaria bare roots to find a shade and height that suits your garden, then let those distinctive flower spikes bring their own rhythm to the seasons.