Pampas grass is a huge, but stunning grass that produces feathery plumes. We explore its care, keeping it in check, and growing healthy grass. Join Kevin Espiritu as he explains all about this interesting grass.The striking, feathery blooms of pampas grass are prized by floral arrangers and gardeners alike. It’s even been used by float decorators for the annual Tournament of Roses parade in Pasadena, California since the early 1900s!
Named for its original home in the grassy plains of Pampas, Argentina, this tall ornamental grass was first introduced to Europe sometime between 1775-1862. It arrived in California in about 1848, going into commercial gardening shortly thereafter, and has become a common sight in coastal areas. In the 1940s, it was even planted to help prevent erosion.
But if it’s not kept in check, this tall landscape grass is known to spread like wildfire – and may become a fire hazard itself. Here, you’ll find ways to manage your pampas grass plants and ensure that your plants flourish in garden beds or containers.Pampas grass (Cortaderia selloana) is also commonly known as tussock grass, cortadera, paina, and pluma. People grow pampas grass as an ornamental privacy screen, a garden border, or as an accent.This feather duster shaped grass is native to the Pampas region of Argentina, South America, and also to Brazil and Chile. It is invasive in much of North America, which is why it’s best for many growing pampas grass to do so in pots and raised beds. This ornamental grass is a perennial evergreen year-round in every temperate zone. In those regions with cold winters, it loses its evergreen status.
The green leaves of pampas grass are razor-sharp, and can easily slice – so watch out! In spring, lovely seed heads in the form of feathery plumes emerge from the grass clump. As the wind scatters seeds, they germinate, rooting deep into the earth.
Pampas grass is dioecious, and it’s difficult to tell which plants are male or female until the plumes emerge. Female flowers are much wider and flayed at the sides. Female pampas grass catches pollen from the more compact male flowers via wind and insects. Those who want to grow new plants should purchase separate plants that include both male and female flowers.
However, gardening both sexes of plants is not recommended in the temperate zone in North America because pampas grass is classed as an invasive species, and it’s listed as one of the 16 Invasive Species Sold at Garden Centers in one of our posts. The clumps form so densely in areas where it remains evergreen that native plants have trouble gaining or retaining an ecological foothold due to lack of space. When people plant pampas grass in a zone or space that doesn’t have cold winters, they risk the spread of thick stands up to 20 miles away.
One great way to control the spread of these ornamental grasses when you’re gardening it is to cut the plumes from either male or female plants as soon as they emerge for floral arrangements. Another way to control this perennial grass is to only purchase female plants, which won’t be pollinated and won’t spread like wildfire – or provide fodder for wildfire.While the majority of pampas grass falls into the selloana species and subdivides into roughly 25 varietals, there are other species that also use the common name pampas grass.