C
CapnObvious
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- Sep 11, 2025
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I just lost both of my outdoor plants to botrytis. I’m super bummed, but I want to turn this into a learning experience. They were big, beautiful indicas, and now they’re bagged up in the garbage can. Salvaged maybe an ounce of clean immature bud. Gonna wash it in peroxide solution and hope for the best.
I live in zone 10a in a CA coastal town. Some nights we get fog and mist, which no-doubt was a factor. I germinated them using the paper towel method, the planted them in gallon pots of EB Stone Recipe 420 soil. They grew just fine in veg, and were topped above the 7th node (the way I was first taught… is there a better way?). Transplanted into 20-gal grow bags of the same soil. Drip watered every other day. Used garden wire to tie the branches down to the fabric bag edge and open them up for airflow and light. I probably should have stripped more of the lower branches too, but I will next time. I trimmed a lot of leaves to create airflow between colas. Seems ok, right?
Then one day I saw a side cola going bad, and inspection revealed a patch of botrytis mold on that branch. I immediately amputated it and sterilized my shears. I sprayed the plant top to bottom with a hydrogen peroxide solution, and also pruned more leaves to improve airflow. Well, we had a few misty nights, and next thing I know my plants are toasted.
I’m trashing the bags and soil. Plants have been hacked and bagged, as I mentioned. Now I want to treat that area of my yard. I’m starting with a copper fungicide blanket spray, then I’m planning to spray several times with a 100ppm hypochlorous acid solution. I’m thinking that combo should kill it. Yes? No?
Next year I want to avoid this. Since my environment is ripe for botrytis, are there particular indica strains that are resistant? Should I not top my plants to keep them from getting so bushy? I have read about using bacillus subtilis as a systemic treatment/preventative, but am having trouble finding application methods/rates. There’s another product called BotryStop, but it’s over $300 for a 12-pound bag, and i only grow a couple of plants a year.
I’m in need of some sound advice. Help a brother out here?
I live in zone 10a in a CA coastal town. Some nights we get fog and mist, which no-doubt was a factor. I germinated them using the paper towel method, the planted them in gallon pots of EB Stone Recipe 420 soil. They grew just fine in veg, and were topped above the 7th node (the way I was first taught… is there a better way?). Transplanted into 20-gal grow bags of the same soil. Drip watered every other day. Used garden wire to tie the branches down to the fabric bag edge and open them up for airflow and light. I probably should have stripped more of the lower branches too, but I will next time. I trimmed a lot of leaves to create airflow between colas. Seems ok, right?
Then one day I saw a side cola going bad, and inspection revealed a patch of botrytis mold on that branch. I immediately amputated it and sterilized my shears. I sprayed the plant top to bottom with a hydrogen peroxide solution, and also pruned more leaves to improve airflow. Well, we had a few misty nights, and next thing I know my plants are toasted.
I’m trashing the bags and soil. Plants have been hacked and bagged, as I mentioned. Now I want to treat that area of my yard. I’m starting with a copper fungicide blanket spray, then I’m planning to spray several times with a 100ppm hypochlorous acid solution. I’m thinking that combo should kill it. Yes? No?
Next year I want to avoid this. Since my environment is ripe for botrytis, are there particular indica strains that are resistant? Should I not top my plants to keep them from getting so bushy? I have read about using bacillus subtilis as a systemic treatment/preventative, but am having trouble finding application methods/rates. There’s another product called BotryStop, but it’s over $300 for a 12-pound bag, and i only grow a couple of plants a year.
I’m in need of some sound advice. Help a brother out here?