Swamp growth is a term used to describe the vegetation that grows in wetlands. The four crossword solutions for this term are REED (4 letters), SEDGE (5 letters), MOSS (4 letters), and REEDS (5 letters). REED is a tall, slender grass that grows in wetland areas, while SEDGE is a grass-like plant with triangular stems. MOSS is a small, soft plant that grows in damp, shady areas, and REEDS is the plural form of REED. All of these plants are common in wetland areas and contribute to the growth of the swamp.