Southern Weed Science Society Weed Guide<BR>Yellow Nutsedge <BR>(Cyperus esculentus L.) <BR>Cold tolerance: 95% of tubers survived 2 C for 12 weeks when buried at 10 cm <BR>Distributed in areas where soil freezes<BR>Purple Nutsedge <BR>(Cyperus rotundus L.) <BR>Cold Intolerance: <10% of tubers survived 2 C for 12 wks at 10 cm <BR>Distributed in areas where soil freezes infrequently<BR>Stoller 1973<BR>