Japanese name: ミツバオオハンゴンソウ（三葉大反魂草） Scientific name:Rudbeckia triloba
[Overview]
A perennial 60–90 cm tall.
The whole plant is covered with coarse bristles.
There are basal leaves and stem leaves.
The basal leaves are oblong to ovate, 10–30 cm long, with petioles.
The stem leaves are alternate, and the lower ones are usually 3-lobed.
The leaf margin has slight teeth or serrations.
The upper part of the stem branches freely, and flower heads 4 cm across are borne facing upward at the branch tips.
There are 6–12 ray flowers, yellow.
The tubular flowers are black to brown.
The receptacle is hemispherical.
The fruit is an achene.
[Cultivation]
Propagate from seed or by division.
It prefers a sunny, well-drained, fertile soil.
If the conditions suit it, it grows well even when left alone.
For potted plants, water thoroughly when the soil surface dries; for plants in the ground, rainfall is sufficient.
For potted plants, apply slow-release fertilizer from spring to autumn; for plants in the ground, no fertilizing is particularly needed if base fertilizer is applied.
There are no particular pests or diseases.
