[Overview]
A perennial.
The leaves are basal, numerous, linear and fleshy.
A long spike or raceme at the stem tip bears many cylindrical to funnel-shaped flowers densely.
The flowers open from the bottom of the flower spike.
[Cultivation]
Propagate from seed or by division.
It prefers sunny soil that is well drained, moisture-retentive and well aerated.
It tolerates summer heat and humidity as well as winter cold, and grows well.
For potted plants, water thoroughly when the soil surface dries during the growing period, and keep on the dry side in winter.
For plants in the ground, watering is not particularly necessary.
Apply slow-release fertilizer as a base fertilizer, and during flowering give slow-release fertilizer about twice, or liquid fertilizer about once a month.
When the flowers have bloomed all the way to the tip of the spike, cut the flower stalk off at its base; this keeps the plant from tiring and new flower stalks keep rising one after another.
There are no particular pests or diseases.
[Notes]
The former genus name was Tritoma, so it is called by this name.
