What is a "permanent weed" ? As opposed to what ? On Mon, Jun 1, 2015 at 6:42 PM, Tim Eck <teck11@embarqmail.com> wrote: > Black poly film actually works much faster as it doesn't allow evaporative > cooling and can reach about 200 F. > > Tim Eck > > > _______________________________________________ > pbs mailing list > pbs@lists.ibiblio.org > http://pacificbulbsociety.org/list.php > http://pacificbulbsociety.org/pbswiki/ > -- The Silent Seed Rare and Unusual plants from around the world. thesilentseed.com