Nice looking group of girls you have going there. Next month should be as good as this one!
Bud rot/PM ... I get it almost impossible here where I live not to get it. In the fall all the plants outside the leaves get covered with PM late in the fall. Low nightime temps and humidity.... recipe for that right there. So we have spores in the fall get on everything.... wait till spring time and warm humid weather. Bam it's back. Insects are easier to control I think.
Here's what I did the last 2 rounds and I didn't have any PM/rot. Made up some Horsetail Fern tea and sprayed all the VEG plants like 3x before flip. and 1 or 2 times early flower (added into my IPM). Horsetail fern tea is a natural anti-fungal and it will kill spores and PM on contact.
I did a lot of research on this and that's what the organic grape growers (for high end wine) in CA use instead of chemicals, which I'd rather throw buds in the compost that spray plants the chems they have for PM/Bud rot. Actually the chems are not allowed for use in cannabis sold in dispensaries and if found there's been recalls and such both in the states and in Canada. So I went looking for a natural defense, figuring we cant be the first folks to have this problem.
Turns out pretty common with tomatoes, grapes, cannabis and so forth.
You can find Horsetail fern on Amazon...that's where I bought it. Here on the east coast it's actually in the wild right now. We went picking some nettles and Horsetail Ferns last weekend and they are just getting started here. So we will have a good supply in a few days. Amazon is cheap enough even for organic. probably cheaper for me to buy it there than get in the truck and drive to where I know I can find it. But we will pick bags full of it so a nice years supply. I use it on all the berries, tomatoes and of course my girls.
It actually worked, last 2 rounds no problems on the same strains that I always had issues with. Basically any cannabis that gets big tight buds that are sticky...pretty much everything we grow, eh? What happens is the spored get on the big leaves in VEG ... once the flowers start forming and close in on the spores and some heat and humidity ... the mold starts growing...usually only on the best biggest colas.