Powdery mildew or some sort of pest?

I had the same bugs.just treated my lady's...I finally saw the buggers.i can tell you for sure that it's done by tripps.look at my diary... My plants look healthy now but Tripps is hard to get rid of..I treat with ecocure and put them in green house and maked it hot and humid.they don't like that.24 hours and then they went outside again.. Hope u can get rid of them. Good luck

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High dave, This is done by bugs! There is a really easy and cheap way to control a pest and kill bugs that treat our cannabis plants and it is 100% biological. Buy Neem oil with a emulsifier and make a 3% neem oil solution. Then spray the leaves (top and bottom) with this solution for 1 week every day. After 1 week the bugs are death and your plants are happy. You can use this for bugs that live in the soil like gnats aswell. Then you just give this solution during watering and it has the same outcome... bugs death... plants happy!!! Happy Growing! 😋

Yeah, you've got some kind of sucking insect - which one isn't really an issue... since BT only works on chewing insects and I am NOT a fan of neem oil, I grab my Dr. Zymes Eliminator. It's organic and can be sprayed up to the day of harvest so whether in flower or not is not an issue either. You'll need to spray for three days in a row (and I would use the recipe for a heavy infestation) - after that, I personally use it once a week as a preventative. Good luck!

Check under your leaves for little critters you don't want there. If you spot some, buy some BT spray and nuke those lil pests. Your plant will love you for it. I hope this helps

yeah, defintely not WPM.. looks like "honeydew" spots from some sort of pest suckling your leaves. pyrethrines will kill it. Southern AG sells a cheap concentrate. you can also find ready to use sprays that cost a bit more, don't last as long, but more conveint. it's something that biodegrades in 2-3 days, which is a characteristic you want when spraying on a plant you intend to smoke later. i'd still be hestitant to spray it on a flowering plant - specifically the bud sites... no idea if it is mobile inside a plant (e.g. you apply CS or STS to a plant and it makes the entire plant toxic for human use, except fo the fem seeds which is the goal in that case) it only kills on contact* bugs walking across anything that has dried up won't be impacted. neem oil will most likely be a preventative measure.. if it has no "azedirechtin" (i botched teh spelling but will be obvious), it doesn't actively do anything to bugs but annoy them or make the plant material taste bad etc.. indirect protection. in USA i rarely see it, but i think products in EU do come with it... it is much more effective and will actualyl be a pesticide if it has the active ingredient. it messes with their neurological systems. DE can stop the ones that don't fly.. put a little circleof it around your pot... don't top dress.. it will turn into a layer of goop that won't easily allow water through. (diatomaceous earth) google pesticides for plants and you'll see other options.. if before flower development, you can use just about anything that isn't incredibly toxic, lol.

looks like bugs - but definitely check under the leaves for mites/thrips/gnats etc