Iris species classification

Iris species

Iris is of great ornamental value. There are about 300 species in the world, and there are more than 60 species in my country. Iris can be divided into two categories according to their underground stems:

Perennial roots of iris

When you see that the underground part of an iris is root-like or rhizome-like, it is a perennial iris. Perennial iris is a perennial plant with sword-shaped leaves and upright flower stems. The most common ones are German iris, yellow iris, etc. The flowers of German iris are blue, white, purple, etc., and are colorful. And yellow iris is yellow.

There is also a type of perennial iris whose above-ground parts remain green while most species wither due to the arrival of winter, so it is called evergreen iris.

Iris bulbs

When you see that the underground part of the iris is bulbous, it is a bulbous iris. Bulbous irises prefer warmth, so greenhouses can promote their cultivation. They include Dutch irises, yellow Denver irises, and net-veined irises, and come in colors such as blue, purple, and white.

Bulbous irises reproduce through bulbs. One type of iris will bloom for one year and then wither. Then new bulbs, the eldest bulbs, will bloom again through cultivation.