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.
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10 Ornamental Grasses to Grow in Your Yard
Fortunately, the blue-gray foliage won’t get lost among the greenery. Best in zones 3-8. Purple fountain grass (Pennisetum ...