Marsh-rosemary

Marsh-rosemary is a salt-tolerant coastal perennial that produces clouds of delicate lavender-purple flowers in summer and is prized in dried flower arrangements. It thrives in well-drained to moderately moist soils in full sun to partial shade, and once established it is quite tolerant of coastal conditions including salt spray and poor soils. Avoid heavy clay or consistently waterlogged soils, and divide clumps every few years to maintain vigour.