To simplify your bulb-buying calculations, we created this table of the most popular bulbs and their planting density in various-sized beds. Just measure the size of your bed and decide which type of bulb you want to plant, and the chart will determine how many bulbs you should buy. Of course, depending on both the effect you're trying to create and your budget, you can adjust the actual number of bulbs you plant. For example, for the most dramatic and showy effect, buy more bulbs than indicated and plant them closer. If you're mixing other bulbs in the bed to provide contrast to the main flower variety, buy fewer bulbs and plant them farther apart.