Green solar architecture' is inconceivable without plants. In addition to their decorative effect, they improve the climate of rooms and - according to the season - provide different services. This is, of course, possible only under certain conditions. The correct selection and combination of plant species and their proper care are indispensable for the functioning of the green solar architecural projekt. Modern methods of cultivation and carefully selected substrates together with new forms of technology make it easy to take care of the plants and therefore the inhabitants of the living quarters are relatively independent of them.