Rhododendron 'Gartendirektor Glocker' The Arboretum and Botanical Garden, University of Bergen, Norway Die richtige Erde fr Rhododendren Tipps & Anleitung This is called guttation. It occurs when there is excess pressure in the root system. At night, stomata close and transpiration stops. But roots keep absorbing water. The pressure builds until the Olivenholz Wurzel kleinanzeigen.de