Planting a garden that looks nice and shows off flowers in an attractive manner requires planning. Start by measuring your garden and use grid paper and a pencil to draw it to scale. Then, gather the planting information for your individual plants, such as their mature size and how much sunlight they need. Mark on the grid where you plan to plant your flowers and keep in mind several things when deciding on how to space the planting flowers.
Group like plants together in odd numbers. Plant them to form a circular or triangular shape (e.g., three in the first row, five in the second, seven in the third).
Intermix the groups with other groups of different flowers. A garden with different bunches of types of flowers often looks better than a garden with just one kind of flower. Same thing applies to bloom colors. Plant flower groups next to other flower groups of a different color and type. Repeat grouping patterns throughout your garden for a more uniform look.
Plant taller flowers (in groups) near the back. This requires that you read the label of your plant to see what the expected mature height will be. This is just a general rule, so if desired, you can plant taller plants in the middle or near the front, especially if they are tall and thin (such as black-eyed Susans).
Allow enough space for your flowers to grow to their mature width. For example, if a plant needs 12 inches, plant them about 12 inches apart from one another. However, you can plant them a bit closer, such as 10 inches, for the space to fill in quickly. Do not plant too close or your garden will look overgrown and the plants will not thrive as well in a crowded space.