Purple fountain grass is annual (sterile seed). Perennial substitutes: Switchgrass cultivars 'Shenandoah', 'Heavy Metal', 'Cheyenne Sky' (red/purple foliage); Muhly grass (pink fall plumes). Check photos online.
Purple Coneflower Collapse: Wet Soil and Fungal Rot
Helping Purple Fountain Grass Survive Winter
Purple Fountain Grass 'Rubrum' (Pennisetum setaceum 'Rubrum')
Purple Fountain Grass 'Fireworks' (Pennisetum setaceum 'Fireworks')
Groundcover Alternatives to Grass: Beyond Clover
Pruning 'Homestead Purple' Verbena: Cut Hard in March for Summer Blooms
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