To Leo Martin, You know as well as I that if you have enough money and the right connections (say through a Botanic Garden) there is no plant that is unobtainable. It may be hard to find but depending on a person's. cash outlay anything can be bought. I know of a case where a gardener had a huge pot of peyote cactus. He was not a member of the Native American Church ( which can possess this plant), it is a Federal Crime to grow and yet there it was. I would consider the grower quite talented and the huge clump was grow to perfection. This proves that under the right conditions you can get anything. I should add, because this cactus is being rapidly destroyed I think the grower was doing a good service helping to preserve this plant. If you don't care to give or sell plant material why don't you consider sending members to sources so they can get something they want. I really feel that the members are not gullible. They are just looking for a source for some hard to find plant. By the way my huge variegated Cycas revoluta, I think the parent was from Okinawa,is doing very well in our growing conditions in Phoenix,trunk about 6 inches thick. Now this is rather rare but it is possible to find a seller-Russ In a message dated 4/5/2013 8:08:46 A.M. Pacific Daylight Time, silkie@frontiernet.net writes: With grasses I would think the idea would be the younger the better so they have not had time to develop a large root base - which takes more vinegar. In dealing with Whitetop, the extension agent said if one is going to spray, they need to time the spraying to when the plant is winding down for the season and is taking food stores back down to the roots . Otherwise all you would be doing was burning the tops. Yes that could serve to set the plant back and enough of it might kill the plant, but it wouldn't happen directly. So, this line of thinking appears to agree with what you were taught. It does make sense. The risk I see is that if you are a bit too late with the herbicide, you have allowed for another year's seed set, which is what tends to happen with this method and Whitetop. Colleen -----Original Message----- From: pbs-bounces@lists.ibiblio.org [mailto:pbs-bounces@lists.ibiblio.org] On Behalf Of J. Denys Bourque Sent: Thursday, April 04, 2013 11:01 AM To: Pacific Bulb Society Subject: Re: [pbs] Vinegar for weeds Dell writes that his vinegar potion only kills the tops of undesired plants... On this, long ago in our "Kill-raspberries-et-al.-that-competes-against-spruce-&-fir" course in Forest Management @ UNB, Canada, we were instilled with the notion that "weeds" are best dealt with near the end of the growing season when they have used up all their resources. Perhaps timing is a concern here. J. Denys Bourque Saint-Jacques, NB CANADA >________________________________ > From: "ds429@comcast.net" <ds429@comcast.net> >To: Pacific Bulb Society <pbs@lists.ibiblio.org> >Sent: Thursday, April 4, 2013 2:32:52 PM >Subject: Re: [pbs] Vinegar for weeds > >I have used "horticultural vinegar" (20%) on my most hated weed, mugwort (Artemesia sp), and it only kills the tops. New growth returns from the roots in no time. > >Dell > >----- Original Message ----- > >From: "Leo A. Martin" <leo@possi.org> >To: pbs@lists.ibiblio.org >Sent: Thursday, April 4, 2013 1:19:04 PM >Subject: Re: [pbs] Vinegar for weeds > >I couldn't tell whether anybody replied to Alberto's query about using vinegar on weeds. >Yes, it works on most but not all weeds. Spray cooking vinegar (5% >acidity as sold in the USA) on young weed seedlings. It seems less >effective on older seedlings or plants, especially dandelions. > >By the way, judging by the number of people writing me privately for >unobtainable plant material, this is by far the most gullible plant group to which I subscribe. > >Leo Martin > >_______________________________________________ >pbs mailing list >pbs@lists.ibiblio.org >http://pacificbulbsociety.org/list.php >http://pacificbulbsociety.org/pbswiki/ >_______________________________________________ >pbs mailing list >pbs@lists.ibiblio.org >http://pacificbulbsociety.org/list.php >http://pacificbulbsociety.org/pbswiki/ > > > _______________________________________________ pbs mailing list pbs@lists.ibiblio.org http://pacificbulbsociety.org/list.php http://pacificbulbsociety.org/pbswiki/ _______________________________________________ pbs mailing list pbs@lists.ibiblio.org http://pacificbulbsociety.org/list.php http://pacificbulbsociety.org/pbswiki/