Mediterranean climates are generally cool and wet in the winter and hot and dry in the summer. The plants growing in these regions are drought-tolerant and thrive under the hot summer sun. For Mediterranean gardens, there are several flowers options. One example flowers for Mediterranean gardens is oleander. Oleander is a Mediterranean bush or shrub that flowers prodigiously throughout the summer and fall. The oleander’s reputation, it is an exotic and fragrant addition to any Mediterranean gardens.