use curved landscape border, fill in with dwarf shrubs, ground cover, steeping stones and mulch/rock. Only rocks for the stepping stones, bricks instead of steeping stones and a potted plant where the maple tree is.
Begonias, cleome, and million bells grace this flower bed. But it's the boulder that makes it different from just any bed. Need more ideas for using stone in the landscape? Check out these ideas: landscaping.