Stachys Officinalis – Hummelo also known as Stachys macrantha – Hummelo, Stachys monieri – Hummelo or Betony – Hummelo is clump forming deciduous perennial it grows to about 60cm and has pink flowers in the summer. It belongs to the Lamiaceae family of plants. Grow it in full sun or partial shade in well-drained soil. Deadhead flowers to prolong blooming season and divide clumps in spring. Great in borders or as ground cover.