Plant self-irrigation and stability of dendrocollections

The article covers water condensation on the surface of plants. It is suggested, that there are mechanisms capable of ensuring plant survival when lacking natural precipitation in the form of rain or fog. The self-irrigation ability allows botanical gardens to create plant expositions of plants that do not need watering in local conditions, forming a kind of semi-protected collections, when humidity and temperature are not regulated, but transparent roof protects the plants against overwatering. Thus, we can create collections of completely drought-tolerant plants in the conditions of their regions.