Windows with flower boxes actually also come under the category of "facade greening" (a selective partial greening). Sometimes they are the only opportunity for walls to for example, they are with insulation or also then the only opportunity for to bring green onto a facade when, for example, there is insulation, or there is no possibility to grow plants from below. We show greening that has been successful here with window boxes, 'greened'/'flowered' traffic lights and the like. Below, you can find photos examples of attachment and protection (against falling down) and of the combination of window boxes and extensive facade greenery.
Window boxes are often made of sheetmetal, high-grade steel, special woods, but most are synthetic material -plastic- today. Ingenious constructions of storage and eutrophication leading up to automated grass planting systems can be found today. Many other plants are suitable for planting next to the usual geraniums you buy from regional flower stores and garden centers.
Small solutions usually aren't convincing when designing window boxes because a single flower box on a big wall seems almost lost. Therefore as many possible windows should be fitted, e.g. all windows of a house floor with boxes. For a uniform phenotype it is appropriate, often simple to fit all windows of a facade with window boxes, generally speaking.
Window boxes are usually put on an available window sill. If a sill is not available, rails get immured, consoles screwed to the outer wall or protection / lattices can also be combined.
During a storm planting boxes can be swept away, especially if they are old and dried out. Different devices help to prevent this: protection rods which are screwed on the wall and horizontal, protection boards or solid protective grilles are installed.