Featured pond plant of the month..... My favorite too! The Iris Pseudacorus
Commonly known as yellow flag iris, this native plant of England is now naturalized in North America. A TRUE SWAMP plant and aquatic plant, it grows in even deeper water than I. Laevigata and makes good growth in double quick time, in as much as 15 inches of water.
The yellow flag is the only yellow-flowered species in the Iris series. Normally growing to a height of 28 to 38 inches, it can grow as tall as 4 feet (like in my pond) in the wild! It has deep green to gray green leaves, 4 to 12 flowers, crowding reduces that number of flowers.
A very hardy pond plant, it should be left in place through the winter, the dead foliage trimmed back above water level in northern-grown climates. Southern-grown plants may remain green year-round.
Very large clumps will float, as in my pond, Not necessary to pot up, small plants can be started up in gravel or rocks to anchor in place at water edge. My yellow flag has not been in a pot now for at least 18 years, bust out of pot long ago.