Plant the banks of your creek bed. Choose plants that will grow toward and lean over your creek bed. Ferns, rhododendron, sedges, hostas and dwarf hemlocks are all suitable choices. When arranging your plants, remember to repeat specific plants from bank to bank, staggering them so that they aren’t directly across from each other. This will establish a rhythm to carry the eye through the space and give a more natural, homogenous look.