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Given that mature plants can grow to about 5 feet tall and almost as wide, purple fountain grass needs plenty of space to breathe. However, it’s recommended to plant it in spring to take advantage of the peak growing season. Like most ornamental grasses, you can plant purple fountain grass around fall or spring. If you’re looking to plant fountain grass but don’t want to jeopardize the surrounding landscape, Rubrum is your answer. However, the ‘Rubrum’ cultivar is largely exempt from this classification as it doesn’t set seed. It’s important to note that fountain grass is considered an invasive species in certain areas.

It can grow to between three and five feet high, adding height to your space as well. Purple fountain grass is a beautiful plant that adds texture and splashes of – as you guessed it, purple or burgundy – to your garden. You can easily grow purple fountain grass as an annual, or provide protection over winter to help it thrive year after year. This means that it can’t survive cold winters like some others in the ornamental grass category, thriving in USDA zones 9-11.īut you can still enjoy purple fountain grass, with its long, arching spikes, tipped with purple plumes, in cooler climates. Purple fountain grass is a tender perennial. The genus to which Rubrum belongs is Pennisetum, which quite literally means ‘fountain grass’. This family is the fifth-largest plant family and it refers to grasses – which includes all cereal grasses, your ‘typical’ lawn grasses, and even bamboos. Purple fountain grass, or Pennisetum setaceum ‘Rubrum’, belongs to the Poaceae family. Purple fountain grass, like most in the ornamental grass family, is very easy to care for, flourishing under a wide range of conditions.ĭespite how easy-going purple fountain grass is, knowing a bit more about it won’t hurt, ensuring that it thrives in your garden whether planted as a natural screen, in containers, or in garden beds. Its deep purple foliage and long fluffy blooms make a statement in any landscape. And high on the list of most popular ornamental grasses is purple fountain grass.

Ornamental grasses are one of the few types of plants that can survive the excessive summer heat while adding lovely textures, height, and even colors to your landscape.