Purple Fountain Grass 'Rubrum' - Popular, drought tolerant grass forms neat clumps of purplish maroon blades. Topped by rose red flower spikes summer through fall. Beautiful as landscape specimen or planted in groups. Perennial in warm climates. NOTE: While Pennisetum setaceum is considered invasive to CA, the species ‘Rubrum,’ ‘Fireworks,’ and ‘Skyrocket’ are not invasive and safe for California gardening efforts. When Monrovia recognizes a new plant is invasive, it will not grow it.