If you're looking for a low-maintenance flower bed, planting tulips close together is a great option. These spring-flowering bulbs will naturalize and multiply over time, creating a beautiful display with very little effort on your part.
However, there are a few things to keep in mind when planting tulips close together. First, make sure to plant the bulbs at the correct depth. Tulips need to be planted about 8 inches deep in order to thrive. Second, consider the size of the mature tulip when deciding how close to plant them. Some varieties can get quite large, so you'll want to give them enough space to grow without crowding out their smaller companions. Finally, make sure you provide adequate water and fertilizer throughout the growing season. Tulips are relatively drought tolerant once they're established, but they do need some water during their active growth period in order to produce healthy flowers.
Overall, planting tulips close together is a great way to create an easy-care flower bed that will provide years of enjoyment. Just remember to take into account the mature size of the tulips and give them enough room to grow without overcrowding their neighbors.