Common Reed (Phragmites australis) flower

Common reed is a tall, perennial grass that is found in wetlands worldwide. It's known for its distinctive feathery flower spikes and hollow stems.

Characteristics:
Height: Can grow up to 10-15 feet tall.
Stems: Hollow and reed-like.
Leaves: Long, flat, and green.
Flowers: Feathery plumes that are often purplish-brown.