Find the dye!

The old people used grass and flowers to dye cloth and clothes, were not they?

Yeah. It is called "plant dyeing".
But whatever flowers are beautiful colors, why were you using only certain plants?

I imagine that an old man used something that grows a lot on that land. Because many plants are growing or not easy to grow, you can not dye many cloths,

I see!
Besides, first of all it must be "color is easy to get on the cloth".

I do not want to use "the color of plants that will melt in water" that will fall with rain.

There are plenty plants growing around us, but are there clothes stained well in these?

Surely worry!
Let's gather the plants around there then dye the cloth, and let's experiment that the color will not fall on the water!