Acorus calamus is a perennial aquatic flower, which belongs to iris family.
The shape of Acorus calamus is that its stem is thick, short and cylindrical with many fibrous roots. Its leaves are linear, with veins raised in the middle and flat veins on both sides. The flower is very large, the outer circle of the flower has three petals that are elliptical and gradually change to obovate, and the middle part of the flower has yellow spots and purple texture. The color of flowers changes from white to dark purple, and the spots and patterns change a lot.
The flowering period of Acorus calamus is generally from June to July.
Acorus calamus likes humid and warm environment and needs fertile and moist soil. Most of them grow in swamp or bank where water is wet.
Acorus calamus is a kind of perennial plant. Its appearance, stem is thick, growing crosswise, and its branching appearance is yellow brown. Its leaves are sword shaped, with veins protruding from the middle.
The color of calamus is green and bright. Its flowers are yellow and green. They last four months from June to September in late summer and early autumn.
Calamus like to grow in swamp or lake island. It likes warm and humid climate. In winter, it will submerge the stem into the soil for winter.
