Geraniums combine the summer charm of balconies and terraces with minimal maintenance. However, living on air and love is not enough for them to flourish. Their well-known vigorous growth is due to the fact that they need a good dose of nutrients to grow and flower. Fertiliser is therefore the key
 Fertilizers are organic or mineral substances, often used in mixtures, intended to provide plants with additional nutrients, in order to improve their growth, and to increase the yield and quality of crops. The action of providing fertilizer is called fertilization. Fertilizer ensures harmonious growth and more abundant flowering of geraniums in open ground and window boxes.
 Fertilizers are only effective during the growing season, starting in April. If you keep your geraniums in winter, they are in a dormant period and do not need to be fertilized.