While you could just start planting flowers randomly, you should probably do some planning first. A well-planned flower will most likely be more enjoyable. Here are some things to take into consideration when planning your flower bed. - Needs for sun for the plants and the shade that is in the location. - Height of the grown plant when flowering as taller plants should be in the back. - Colors of the flowers as you may prefer a variety in your garden. - Drainage and irrigation needs.