Hi everyone, I’m new here. I grow outdoor and indoor in living soil while trying to be regenerative as possible. Thanks for letting me be part of this group. So now I have my first question. Does anybody use trichoderma as foliar spray? I live in the Midwest and humidity just started up some septoria. I’d say I’m close to halfway done in flower but want to be proactive with this septoria. Could I foliar trich in flower?
2 Likes
No idea but a cool topic. 
2 Likes
I actually just ordered those a couple days ago lol. I follow his stuff a lot. I’m just not sure if it’s too late in the grow to foliar spray it
3 Likes
Septoria just keeps going. I don’t believe it’ll kill it 100 percent, but slowing it down is a great thing
1 Like
I’d be very careful to research any secondary metabolites of Trichoderma sp. and their toxicity to humans especially considering these fungal compounds will likely be consumed via combustion and may form other molecular compounds in the degradation process. Generally I believe it’s common practice that Trichoderma sp. would be applied as a soil drench or an additive to compost tea recipes for drench/foliar as preventative in veg and not as a foliar in flower. The common biologically based foliar applications acceptable for flower are facultative anaerobic bacteria like lactobacillus or are enzyme based from my understanding. some gardeners suggest using diluted hydrogen peroxide or lactobacillus as a soil drench in flower as a last ditch effort to combat soil born anaerobic pathogens, I’ve seen this work for Pythium. The KNFer’s might use a foliar of 1:1000 lactobacillus and maybe even add something like 1:30 diluted seawater for getting those through. If it were me I’d definitely do a bacillus drench of the soil and make sure to apply an endomycorrhizal inoculant to the rootzone prior to transplanting as a preventative next round.
9 Likes
This is good info. I appreciate it.
2 Likes
I agree that bacterial inoculation is safer in flower than fungal inoculation.
Bacterial infections are often very easy to cure.
Fungal infections are a nightmare to treat.
3 Likes
I’m just going to do some root drenches of trichoderma and labs while defoliating the affected leaves. I’ll prep better for next years grow
1 Like