Imperata cylindrica aka Sharp Grass

Taxonomy

Genus Imperata Family Poaceae Order Poales Class Liliopsida Phylum Tracheophyta
Imperata cylindrica, also known as cogongrass or kunai grass, is a highly adaptable plant species native to tropical and subtropical regions of Asia, Micronesia, Melanesia, Australia, Africa, and southern Europe. It has been introduced to other parts of the world, including Latin America, the Caribbean, and the southeastern United States, where it is considered one of the 10 worst weeds in the world. The plant can grow up to 6 feet tall and has leaves with an off-center, whitish midrib and finely serrated margins. The main vein is lighter in color than the rest of the leaf, which narrows to a sharp point at the top. The upper surface is hairy near the base of the plant, while the underside is usually hairless. The plant has an extensive rhizome network, accounting for 60% of the total biomass. The biomass can penetrate up to 1.2 meters deep, but 0.4 meters is typical in sandy soil. The plant is highly flammable and fire-adapted, able to spread rapidly by colonizing disturbed areas and encouraging more frequent wildfires. Imperata cylindrica has invaded 153 billion acres worldwide and over one million acres in Florida, displacing native species of plants. The red form is not invasive but can revert back to the green form which is aggressive. This plant can be removed by putting on gloves and gently pulling out the plant with the root system, or using a shovel for convenience. It is important to note that while this plant may be useful in some cases, it may also be poisonous.

Common names

Sharp Grass, Cogongrass, Cogon Satin Tail

How to care for Sharp Grass

Difficulty

Even if you don't have a green thumb, you can successfully care for Sharp Grass due to its easy-going nature.

Water

Sharp Grass should be watered regularly, allowing the soil to dry out between waterings.

Soil

Sharp Grass loves a well-draining soil. Perlite and vermiculite help with drainage, while coco coir adds organic matter, so a good potting soil mix will have all three. You can improve store-bought soil by adding some perlite to it.

Lighting

Sharp Grass thrives in bright and direct sunlight. To ensure your plant receives enough light to survive, place it less than one foot from a window. The current weather in your area may affect the placement in your home. For example, if you live in a region that has longer and more intense periods of sunlight, then you may want to place the plant farther away from the window to avoid direct sunlight and reduce the risk of sunburn. Alternatively, if you live in a region with relatively milder temperatures and less intense sunlight, then you may be able to place the plant closer to the window for increased exposure. Ultimately, the current weather in your area should be taken into consideration when determining the best placement for your Cogon Satin Tail.

Toxicity

The toxicity level of this plant has not been officially confirmed by Ploi. If there is a possibility of ingestion of plant material with an uncertain toxicity by you, a family member, or a pet, it is advisable to seek the assistance of a medical professional.

Growth-pattern

The Sharp Grass is a clump-forming species, with new growth originating from the soil surrounding the main plant.

Region of origin

Sharp Grass’s native range is E. Asia - China, Japan, Korea.

More info:
Wikipedia