Plan which flowers you want to include in the garden. Choose the flower seeds according to growing conditions in your area, such as sunlight and weather. Purchase flower seeds from a garden center or online.
Fill the growing pan with the seed starting mix according to the included instructions. Moisten the soil lightly with water and tap the pan on a solid surface, such as a table, to assist in settling the soil. More soil may be added depending on the level of settling. Seed starting mixes contain the proper nutrients to stimulate root growth and aid in excellent drainage and water retention.
Space the flower seeds 2-inches apart in the growing pan according to the seed packet instructions. Pour a thin layer of seed starting mix over the seeds. Water the growing pan lightly. Be sure not to displace any dirt away from the seeds by using spray or watering cans.
Place the plastic cover included with the growing pan on the top to raise the humidity levels that aid in seed germination. Set the growing pan in a warm spot away from any drafts, pets or cold temperatures. Allow one to two weeks for the seeds to germinate.
Remove the plastic cover when flower seeds begin to sprout. Set the seedlings in a sunny area where the temperature ranges from 68 to 75 degrees Fahrenheit. Allow the seedlings to stay in this location until they grow at least four leaves. Separate the flower seedlings and plant them in a garden, in containers or in hanging baskets.