It's used fairly extensively here in the Garden. Just don't overdo it. Paul Licht, Director Univ. California Botanical Garden 200 Centennial Drive Berkeley, CA 94720 (510)-643-8999 http://botanicalgarden.berkeley.edu/ On 12/29/2011 2:46 PM, ds429@comcast.net wrote: > > I have started experimenting with Physan to eliminate fungus and algae growth on the soil surfaces of potted plants. I originally started using it to prevent algae in the reservoirs of my wick-watered gesneriads, for whic h it is very effective. Accor ding to the manufacturer's claims, it will kill anything bad and nothing good. Does anyone have any experience with Physan - particularly as an anti-dampoff agent? > > > > Dell > > > ----- Original Message ----- > > > From: "clayton3120 clayton3120"<clayton3120@cablespeed.com> > To: "Pacific Bulb Society"<pbs@lists.ibiblio.org> > Sent: Thursday, December 29, 2011 5:13:45 PM > Subject: Re: [pbs] What's germinating this week. > > Good Afternoon, Seed Sowers. > This is great with all the trial info coming in. > Today I received an order of Irisseed, mostly Junos, Anemone species, > etc. etc. > I will take half the batch of each and use the GA3 treatment, and the > refrigerated seed in slightly moist medium. It will be a while before I > can post results. > As i write this, here is a little report on Ga3 treated seed. > Lilium candidum seed , sown 11/29/11, Ga3 treatment 250 ppm, planted in > seed mix, and placed in coldframe, 10 seedlings emerged so far. > Fritillaria spefsiotica , sown 10/27/11, Ga3 treatment 300ppm, planted in > seed mix, 13 seedlings emerged so far. > Narcissus rupicola ssp. rupicola, sown 10/27/11, Ga3 treatment 300 ppm, > planted in seed mix, > 12 seedlings emerged. > etc etc > > A great continuing topic would be damping off cultural practices, > preventatives. > Has anyone used 'Rootshield' for an extended period? > Rick K > > On Wed, Dec 28, 2011 at 11:22 PM, Lee Poulsen<wpoulsen@pacbell.net> wrote: > >> With all the talk of Deno's research as well as the use of gibberellic >> acid in getting seeds to germinate, I have to report that the method Diana >> of Telos Rare Bulbs uses to germinate seeds from the two American >> hemisphere mediterranean regions (Chile and California) has produced >> amazing results for me this autumn. In the past, I've always just sown >> seeds from both of these locations directly in 10-cm pots in the autumn and >> other than watering them, I would just leave them outside to experience the >> fluctuating autumn temperatures and sporadic rainfall that occurs here in >> southern California naturally (since this is a mediterranean region in the >> Western Hemisphere). I always get decent germination for most species, but >> some species have never germinated for me. I would always attribute it to >> their being from regions more poleward than where I live, and therefore >> more chilly, or from regions at much higher altitudes than my location, or >> even from regions more desert-y than my location. >> >> Regardless, in her blog, Diana mentioned that for seeds from California or >> Chile, she puts them in slightly moist vermiculite in sealed baggies in the >> autumn and then places them all in a refrigerator. She then checks all the >> bags on a regular basis for germination, and as they germinate, she takes >> them out of the fridge and plants them in her regular seedling mix. >> >> For me the process is still underway, so I don't know the final result, >> but so far, the results have been overwhelming to me, both in the species >> that have finally germinated for me, as well as in the numbers of seeds >> that germinate. I've finally gotten Rhodophiala rhodolirion, both pink and >> white versions to germinate, and they germinated almost as quickly as the >> low elevation species did--about 2 weeks in the fridge. Also, the >> Calochortus seeds from the first round that came from the BX have >> germinated (I believe some of them were the old seeds from Nhu that Michael >> Mace referred to). And then to my most pleasant surprise, several species >> of Chilean seeds that I got in May of 2010 and was unable to sow that >> autumn due to excessive business travel, have all germinated including >> seeds that I didn't think would be viable that long. >> It's a little more trouble to plant germinated seeds, but well worth the >> increased germination rate. (Another example is Tropaeolum azureum: I've >> always gotten maybe 1 or 2, never more than 3, seeds out of every 10 that >> I've planted to germinate in the past. This time, 8 or 9 out of 10 seeds >> germinated and I was completely unprepared for that. I purchased more of >> this to try this year since I was unable to plant the seeds I bought a year >> and a half ago. But the old seeds germinated in almost the same numbers, so >> now I have two full pots of this growing!) >> >> I think I'm sold on this method now. >> --Lee Poulsen >> Pasadena, California, USA - USDA Zone 10a >> Latitude 34°N, Altitude 1150 ft/350 m >> _______________________________________________ >> 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/