Successful establishment of giant reed within a riparian area results in a decline of the native plant species.

The giant reed along with the salt cedar, have greatly devastated and degraded the lower Colorado River riparian.

Consistent maintenance is needed to eradicate the constantly growing giant reed.

Wetland species such as narrow leaf cattails, horsetail, and giant reed are abundant.

Here they found some plant-growths of a different type, suggesting calamites, or giant reeds.

One of the most troublesome invasive species is the giant reed, which plagues many coastal Southern California waterways.

Perhaps the largest effect that giant reed has is its usage of water.

The saltcedar is another invasive large weed that also, like the giant reed, uses large amounts of water.

Under a microscope that must look like a wild terrain where only giant reeds can survive.

Several reports underlined that it is more economical to grow giant reed under moderate irrigation.