A mature yellow nutsedge plant (below). Notice the view from the top: the leaves line up and point in 3 directions, each 120° apart (this is called the leaf phylotaxy). Notice also the nutlets clinging to the root system.
Below is a closer look at the nutlets. The three show their development. Nutlets are an import way that yellow nutsedge reproduces itself.
The yellow nutsedge seedhead (below, left and center). Seeds are of lesser importance for reproduction. A complete flowering plant (below, right).
A field infested with yellow nutsedge (below).
Seedlings, probably from nutlets
Things in "3's" seems a theme with yellow nutsedge. Below left is another view of the leaf phylotaxy, evenly offset into thirds. Below right is the stem, which is triangular.
The third way that yellow nutsedge reproduces (there is that "3" theme again, for the 3rd time) is by underground rhizomes, shoot tissue (below).
