Position: Full sun to partial shade
Flowering period: Summer
Soil: Moist, well drained
Eventual Height: 60cm
Eventual Spread: 45cm
Hardiness: 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a
Stachys macrantha is a deciduous herbaceous perennial with a clump forming habit. Its mid green leaves are cordate with sinuate margins, up to 8cm long and 5cm broad. Its purple flowers are funnel shaped and appear as dense spikes above the leaves, these are up to 10cm long.
Stachys macrantha, commonly known as Betony or Big Betony, is native to the Caucasus region. In its native habitat it grows in alpine meadows.
The etymological root of the binomial name Stachys is derived from the Greek staxus meaning ‘an ear of grain’, referring to the spike of flowers. Macrantha is derived from the Greek makros meaning ‘large’ anthos meaning ‘ flower’.
The landscape architect may find Stachys macrantha useful as an effective deciduous ground cover. It may be used as part of a mixed herbaceous or prairie type planting scheme.
Ecologically, Stachys macrantha flowers are attractive to pollinating insects.
The Royal Horticultural Society has given the varieties ‘Robusta’ (1993), ‘Superba’ (2012), ‘Violacea’ (2012) of Stachys macrantha their prestigious Award of Garden Merit.
Stachys macrantha prefers moist, fertile, well-drained soils. It tolerates most pH of soil.
Stachys macrantha requires little maintenance. Large clumps may be divided in spring.