Many plants of European and Asian origin belong to the rhododendron genus; as garden plants, Asian species are preferred, which have richer and more striking blooms. These are shrubs, which can also become large, so it is advisable to place them in a place in the garden that can also accommodate a shrub up to 2-3 meters high, and just as wide. They prefer shady or semi-shady locations, not because they fear the presence of the sun, but rather because they need constantly fresh and moist soil, which is quite difficult in full sun in August. From March to September they need very regular watering, so that the growing substratum always remains slightly humid, but not soaked with water: at each watering we check with our hands that the soil has had a chance to dry, if we find it still wet let's thin out the waterings. Like the other acidophiles, the rhododendron is also cultivated in a specific soil, without limestone, consisting of peat and little sand; if the soil of our garden is calcareous periodically we supply our rhododendron with a soothing fertilizer, which will avoid the onset of ferric chlorosis.