http://www.purelandscape.com/rss.aspx?t=d&c=303&p=05www.purelandscape.comWeed ControlNoWeed ControlWhat does pre-emergent do and how do you know if you need it?http://www.purelandscape.com//fdownload.aspx?r=2&q=423http://www.purelandscape.com//fdownload.aspx?r=2&q=423http://www.purelandscape.com//fdownload.aspx?r=2&q=4231059925Application/pdfWeed ControlThu, 25 Jun 2009 20:51:00 GMTwww.purelandscape.comNoPre-EmergentWhat does pre-emergent do and how do you know if you need it?