If you want fast-growing bushes, then you need to invest some money. Do not worry, but these shrubs are worth buying. They give a landscape view and blossom like a star. Shrubs which are fast-growing, i.e. Forsythia provides beautiful hue during the spring and autumn. Some of the fast-growing flowers or you can say bushes are- blue hydrangea, north privet, forsythia, crape myrtle, beauty bush, American hazelnut, and more. These bushes are easy to grow and give a fountain-like spray of colours in springs, summers, and autumns. They look amazing and create a landscape view from your balcony.