The tender variety of pampas grass, Cortaderia selloana, can be invasive in mild climates. The Big Island Invasive Species Committee announced the eradication of the grass on Tuesday. Lateral roots can spread to 13 ft. (4 m) in diameter and 11.5 ft. (3.5 m) in depth. Pampas grass is on the Hawaii State Noxious Weed List , making it illegal to sell or transport pampas grass in the state of Hawai’i. C. selloana (pampas grass) is an erect perennial, tussock grass, up to 2-4 m tall and 1-2 m wide. Pampas grass has proved extremely invasive and harmful to natural environments in many countries and is listed in the Global Invasive Species Database. Some reports suggest the seeds can be carried as far as 20 miles (32 km). It has taken years for our pampas grass to expand enough for the individual plants to form a solid "hedge" like we wanted. Cultivar Name: Characteristics 'Andes Silver' Leaves are basal, ascending to spreading, bright green, sharply serrated and can reach to 5 ft. (1.5 m) in height. Instead, consider a native grass like muhly grass, or fakahatchee. Through this article, know all about this beautiful grass and most importantly, about its maintenance. Pampas Grass. It has large showy flower plumes that extend 2-3′ beyond the foliage. Pampas grass is an invasive species. Vol 12, Issue 3; Wal-Mart stops selling pampas grass in California. Photograph by Tony Hisgett via Flickr.. One species of Cortaderia is much more invasive. Pampas grass is one of the most majestic grasses, but it’s also one of the most invasive.. Pampas facts, a summary. Foliage Cortaderia selloana leaf blades can get up to 6 ft. (1.8 m) long and 1-3 in. Before growing pampas grass, be sure to put it somewhere in the landscape where it has plenty of room to … The exit from our drive is onto a blind curve, already nerve-wracking, but the blasted grass makes the limited visibility nonexistent. The tussocks of pampas grass are more erect and fountain-like, not spreading, when compared to tussocks of jubata grass. Once considered an excellent choice for its salt tolerance and fast growth, pampas grass has been found by the UF/IFAS Assessment of Non-Native Plants in Florida's Natural Areas to be invasive and is not recommended for any use. Also known as Cortaderia Selloana, pampas grass can be a decorative addition to the garden.They can highlight your landscape and make your space look more beautiful. Some pampas grass cultivars in the nursery trade. At its base are dried, corkscrew-shaped leaves. Therefore, it does not serve as a food source for any animals like deer and rabbits. A tale of two invaders: The dynamic history of pampas grass and jubata grass in California. Two species of pampas grass are found in Hawaii, Cortaderia selloana and C. jubata, which are difficult to tell apart. Pampas, a native to South America is a large clump of grass and is perennial in nature. Pampas grass is easily confused with jubata grass (C. jubata). Above: Pampas grass. Description. Appearance Cortaderia selloana is a perennial in the grass family (Poaceae) growing 6-13 ft. (1.8-4 m) in height. That makes pampas grass troublesome for those who do not want it, and the Big Island Invasive Species Committee on the island of Hawaii is on a mission to ensure that part of the state is rid of it. Foliage Cortaderia selloana leaf blades can get up to 6 ft. (1.8 m) long and 1-3 in. Grey Jordan 1, This grass is drought tolerant and likely will only need watering during extended dry spells once … Invasive and Exotic Grasses and Grass-like Plants . It can be cut down in the fall, much as you do other perennials - but I wouldn't do so. Pampas grass is an erect giant bunch grass with long, slender, bright green, saw-toothed leaves. Cortaderia selloana is a species of flowering plant in the Poaceae family. The invasive pampas grass has been uprooted from all known locations on Hawai’i Island. Cortaderia selloana 'Pumila' is a compact Pampas Grass that is perfect for mid-sized gardens. Summary of Invasiveness Top of page. The two species are distinguished by several features, including stem height, leaf, plume, and spikelet color, florets, leaf tip shape, and presence of viable seed. However, many people in other locations use this ornamental grass with large plume-like flowers to decorate their yards, gardens, and pool areas. Several decades ago, a surrogate species, Cortaderia jubata, was introduced to the trade and has since become a primary weed in coastal areas of the West. How to Grow Pampas Grass. Ecological Threat: Cortaderia selloana is a tall tussock grass that can reach heights of 4 meters. Height – 1 ⅓ to to 13 feet (1.5 to 4 meters) Exposure – full sun Soil – ordinary. These tall grasses have long, saw-toothed leaves with large plumes in late summer. 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