Thank you for this valuable information, Robin. The literature has stated for years not to apply under 70 degrees but I will now do so. Richard On 3, Oct 2009, at 11:30 AM, Robin Hansen wrote: > Regarding Richard's comment that Roundup will not work below 70 > degrees. I'm sorry, but my experience over many years proves > otherwise. 70 degrees on the southwest coast of Oregon doesn't > happen but once in a blue moon, if then. > > I have used Roundup once or twice a year for years and it works very > well, if slowly, even if used when the temps are in the 50s. As > others have mentioned, it's important not to spray when there is > potential for rain. When Roundup first came out, the requirement > was for waiting six hours before rainfall. The labels now state two > hours. Because of the lower temps here, I still hold to the six- > hour rule as a precautionary measure (due to high humidity at times). > > Robin Hansen > Southwest Oregon > maybe 58 today... > _______________________________________________ > pbs mailing list > pbs@lists.ibiblio.org > http://pacificbulbsociety.org/list.php > http://pacificbulbsociety.org/pbswiki/