Primary Succession of St.Louis By RinehartCourtney 200 The land is created by an erupting volcanoe Period: 200 to Sep 11, 2013 Primary Succession 400 Moss, lichen, and other microrganisms begin to grow 500 Brown soil appears Sep 11, 1000 Grass beins to grow Aug 30, 1200 Shrubs and weeds start to develop and grow Mar 20, 2000 Trees grow and take over Mar 20, 2013 Present today
