Looking for product or mix-it-yourself IPM recommendations for powdery mildew prevention during middle to late flower. I use neem oil for my veg leaves but that is not an option now that budlets have formed. Is there anything that won't leave an unpleasant residue on the buds?
​​​​​​The humidity has been very high here (Willamette valley OR) and there is a lot of spore in the air outside. Inside the room, I have been policing my plants enough to catch individual spots of PM before they have a chance to spread. The environment has been remedied by a dehumidifier and AC (my electric bill is gonna be 💀). Now maintaining 74-75°F and 45-50% RH pretty much around the clock, with night being slightly cooler by a degree or two. Also the door no longer needs to be open to the rest of the house 24/7 so I'm hoping that cuts back on the spore traffic.
I'm not being overrun for now but I sure would like to add a second line of defense to the environment control. Also could someone tell me where to edit my signature, I can't find it in the menus.
You can harvest early also. It just gives you a slightly different effect. All milky trichomes with no amber will give you a more uplifting effect whereas lots of amber trichomes will give you a more couch lock effect.
Flushing gets thrown around alot but it means different things to different people. Most of the time I read people saying they want to flush either because they're plant got over fertilized and they need to wash out the NPK in the soil to reduce the amount toxicity to the plant or they do it towards the end of harvest. The former is a legitimate use but should only be done as a last resort. Better to bone up on watering practices and nutrient ratios then have to do that. The latter, IMO, is broscience. Many talk about how they want to flush out the nutrients in the plant for a smoother smoke or they don't want to smoke nutrients. Magnesium is a nutrient and is vital to have in your ready to smoke flower. If not your flower won't stay lit. I don't think flushing in that context does anything in regard to what the user thinks it's doing. What you want to do if you want to reduce the amount of nutrient ions in the plant when you harvest is to taper down the nutrient solutions you are giving the plant. For example, in my grows I measure nutrient strength using PPM on a 500 scale. In veg I'll go as high as 1200ppm but in flower I only go as high as 1000 ppm. The last 4 - 5 weeks I start reducing the concentration of nutrient in the water by dropping PPM between 100 - 200 ppm a week. By the time I get to the last week I'm essentially giving them pure water.