Select the dimensions for your flower bed. Choose a length and width for the flower beds. Ideally, single out a piece of land between 100 and 500 square feet to plan the garden(s).
Determine which part of your front or back yard gets a minimum of five hours of direct sunlight per day. Observe the path of shadows during the day from trees, neighboring houses, fences and so on. For optimum sun exposure, plan to place the garden beds facing south.
Choose the flower bed type. Depending on the flower species you wish to grow, build or purchase a raised garden bed. Pick raised beds if you live in a colder climate because the soil warms faster in spring and you can plant seeds earlier. In-ground flower beds are better suited for warmer climates because they require less watering.
Pick the flower seeds. Base your decisions on whether the flowers are shade or sun-loving, whether they are perennial or annual, the pH level they require, and their attractiveness for your yard. Consider the type of insects, butterflies, hummingbirds and other creatures that may visit and pollinate the flowers in bloom.
Prepare the soil. Determine the soil pH level using a soil test kit. Readings of 7.0 pH and higher indicate alkaline soil conditions; low pH levels, under 7.0, indicate the soil is acidic. Match the flower seeds you choose on these calculations. Or, alter the soil type by adding more acidity to the soil. For instance, you can sprinkle coffee on the soil to increase acidity.
Plant the seedlings based on the season they require for optimum growth and health.