[Overview]
An annual or perennial.
The stems are slender and erect.
The leaves are alternate and palmately divided.
They have stipules.
Spikes or racemes at the stem tips bear many flowers.
The flowers are 5-petaled, with thin petals.
Each flower is short-lived, but they open one after another.
The fruit splits into mericarps arranged in a ring.
[Cultivation]
Propagate from seed or by division.
It prefers sunny, well-drained, fertile soil.
It is easy to grow in cool regions.
In warm regions, take care with long rains and stuffiness in summer.
For potted plants, water thoroughly when the soil surface dries; for plants in the ground, rainfall is sufficient.
If plenty of organic fertilizer is applied as a base fertilizer, no further fertilizing is particularly needed, but for potted plants, slow-release fertilizer may be placed on the soil in spring and autumn.
Leaf rollers can occur.
