Phragmites australis


Common Names: Common reed
Category: Plants
Sub-category: Grasses


A large perennial grass found in wetlands throughout temperate and tropical regions of the world. Phragmites are an invasive species in North America. Gallic acid released by Phragmites is degraded by ultraviolet light to produce mesoxalic acid, effectively hitting susceptible plants and seedlings with two harmful toxins. Phragmites are so difficult to control that one of the most effective methods of eradicating the plant is to burn it over 2 to 3 seasons. The roots grow so deep and strong that one burn is not enough.

The erect stems grow to 2 to 6 meters tall. The leaves are long for a grass, 8 to 20 inches and 0.8 to 1.2 inches broad. The flowers are produced in late summer in a dense, dark purple panicle, about 20 to 50 cm long. Later the numerous long, narrow, sharp pointed spikelets appear greyer (brownish) due to the growth of long, silky hairs.

Primary Flower Color: Blue/Purple
Secondary Flower Color: Brown
 
Edible Notes: Numerous parts of Phragmites can be prepared for consumption. For example, the young stems, while still green and fleshy, can be dried and pounded into a fine powder, which when moistened is roasted and eaten. Also, the wheat-like seeds on the apex of the stems can be ground into flour or made into gruel. Rootstocks are used similarly. Because it is invasive and found near coastal waters, there is good concern to avoid to due to herbicide use or polluted waters.
Warnings: Not known to be dangerous.
Sightings