Preslia cervina (Mentha cervina)

Preslia cervina, commonly known as water spearmint, is a clump-forming perennial with aromatic, lance-shaped green leaves forming dense foliage along pond margins and damp soils. In summer it produces clusters of small, tubular blue-purple to lilac flowers, creating a subtle yet attractive display for pollinators.

This species is valuable for wetland biodiversity, providing nectar and shelter for insects, and its upright, clump-forming habit and tolerance of consistently moist or shallowly submerged soil make it ideal for pond edges, bog gardens, and naturalistic water features.