Japanese name: ミソガワソウ（味噌川草） Scientific name:Nepeta subsessilis
[Overview]
A perennial 50–100 cm tall, found in subalpine grasslands and along mountain streams.
The stem is square in cross section and has curved hairs.
The leaves are simple and opposite, broadly ovate to broadly lanceolate, 5–14 cm long and 2–8 cm wide, with sparse hairs on both surfaces.
The leaf margins are toothed.
The petiole is almost absent, or at most 1 cm long.
A verticillaster at the stem tip bears purple flowers.
The corolla is two-lipped and 5-lobed, and the central lobe of the lower lip has dark purple spots.
The fruit is a schizocarp.
[Cultivation]
Propagate from seed, by division, or by shoot cuttings.
It prefers soil in sun to partial shade that is well drained and retains moisture well.
Cultivation is easy.
For potted plants, water thoroughly when the soil surface dries; for plants in the ground, rainfall is sufficient.
In spring, place slow-release fertilizer on the soil.
There are no particular pests or diseases.
[Notes]
The Japanese name comes from the Misogawa River, a tributary of the Kiso River.
