Hi Tim, I haven’t used your specific chemical before, but lately with bulb seeds I have been treating them with a mist of 200-400ppm gibberellic acid, I dissolve it in grain alcohol and then dilute it with water to the final solution. I soak the large seeds and for smaller ones I sow them and then mist with the solution. The alcohol acts as a sterilant and I have had very little problems with fungal issues and it really does speed up germination. I do rotate between immunox and sulfur fungicides once germination has started for the dreaded damping off period. Mark Illahe Nursery and Gardens Salem, Oregon > On Sep 1, 2024, at 6:35 AM, Robert Lauf via pbs <pbs@lists.pacificbulbsociety.net> wrote: > > Possibly off-topic, but I have occasionally done stratification by putting seeds in damp pro-mix in a zip-lock bag and putting in the bottom of the fridge. It can also be done using disposable tupperware, but it is a bit harder to make sure they don't dry out over long storage. In either case, get the mix really moist and microwave for a few minutes. I have found this to kill pathogens, not to mention fungus gnat eggs. You might try this alone or in combination with your fungicide. > If you're doing stratification in the open ground, then that's a different problem. In any case, good luck beating the cooties into submission. > Bob still digging the TB iris in Zone 7 > On Sunday, September 1, 2024 at 09:12:40 AM EDT, Tim Eck via pbs <pbs@lists.pacificbulbsociety.net> wrote: > > I have been having problems with fungi and/or bacteria during damp seed > stratifications and was wondering if anyone had experience or opinions on > the use of benzalkonium chlorides for this purpose. > I would appreciate any constructive feedback. > Thanks > Tim Eck > _______________________________________________ > > > _______________________________________________ > pbs mailing list > pbs@lists.pacificbulbsociety.net > https://lists.pacificbulbsociety.net/cgi-bin/… > Unsubscribe: <mailto:pbs-unsubscribe@lists.pacificbulbsociety.net> > PBS Forum https://… _______________________________________________ pbs mailing list pbs@lists.pacificbulbsociety.net https://lists.pacificbulbsociety.net/cgi-bin/… Unsubscribe: <mailto:pbs-unsubscribe@lists.pacificbulbsociety.net> PBS Forum https://…