One of the more popular perennial grasses that is not hardy in this area is purple fountain grass (Pennisetum setaceum 'Rubrum'). This fast-growing grass makes it a good plant to use as an annual.

Ahead, experts share how to care for fountain grass, so you can use it as decorative filler or ... "It develops dusty purple plumes that fade to tan in the fall. The green foliage is pretty ...