Spray all through flowering?? Yeah depends on the plant if I can spray all through flowering I guess. Meaning some plants have no lower buds and some do. I really don't want to spray the buds I guess.
PM on newly rooted clones
- Thread starter Meast21
- Start date
nxsov180db
Well-Known Member
Flowering is where the pm will get out of hand, are you just in veg now? You can spray oxidate or purecrop on the lowers as much as you want, spraying the lower buds won’t matter.
Citric acid is fine to spray all through flowering right... I'm on day about 25 on flowering and the citric acid is be keeping it at bay. I don't even see any PM, but I'm sure I have a very tiny bit of it... The PM I got always started on the lower leaves and worked up to the middle. Also I only seen the PM on the leaves near the outside of the tent or the outside of the plants.
WHat's oxidate and purecrop?
nxsov180db
Well-Known Member
The PM stays inside the plant tissue so yeh it's sort of always there, that's why you want to remove as many of the leaves that had it as possible. I don't have any experience with citric acid but I guess you could? Oxidate is a peroxide product that also contains peroxyacetic acid. Purecrop1 is corn and soybean oil but it doesn't act like an oil, they change it on a molecular level somehow, so it doesn't cause burn like an oil typically would. It'll still burn the tops (the hairs) a little bit in bloom but the bottoms should be fine. Anyway those are the 2 products I use for knocking down PM. I use regalia too which is like a plant immunity booster.
Treesomewanted77
Well-Known Member
Has anyone used zerotol? I was reading a lot of reviews on it and says it works good for PM but I have no experience with it. I was curious for my hoop house grow to use it as a preventive
nxsov180db
Well-Known Member
Yes, same thing as oxidate. It works good but I think you might be better off using Regalia as a preventative up until flowers are forming (week 3).
Gonna try the sulfur thing soon. How long do I need to burn the sulfur in my tents that are 4x4 and 3x3? Gonna try to put all my small plants in the same tent and do they all together I guess. Also how much do I need to use? Is it overkill to where a suit too? I'm gonna be wearing glasses and a mask......
Sulfur Burners in Cannabis Crops - GB The Green Brand
Everything you need to know about how to use sulfur burners in cannabis crops; find out why you should be using one and how to use it.www.growbarato.net
hotrodharley
Well-Known Member
Personally I don’t stay in the area. I get it going and leave. Not healthy to breathe. Creates SO2. Sulfur dioxide. Combined with water, like lungs, it creates H2SO4 by picking up a free oxygen. Sulfuric acid. If you burn enough to fill the room with vapor that should be sufficient. Leave doors closed and let it work. I’d do the entire room.
hotrodharley
Well-Known Member
For control of powdery mildew on grapevine they use dry sulfur powder and dust it on.
My grow is down in the basement, is it safe to be upstairs on the main level? Is this like a sure thing killing the PM? I got 5 tents that are 3x3 or 4x4 how long do I have to burn the sulfur for in the tents? Can you send a link of a sulfur burner you use? .... So I shouldn't stay in the area where I can smell sulfur I'm guessing.
I've tried like 3 things now and although my citric acid spray has controlled the PM, I'm sick of spraying it all the time and it clogs up my sprayer. Gonna go the sulfur route and try to get rid of it for good.
Wastei
Well-Known Member
Citric acid clogging up the sprayer? What grade do you use? Citric acid shouldn't clog up anything. Been using the same sprayer for 5 years now. Maybe it's your water source?
hotrodharley
Well-Known Member
It kills powdery mildew, spider mites and anything else in the immediate area. I’m not a YouTuber but there’s probably some videos on the subject.
What sprayer do you use? I use a bottle sprayer, not the big gallon ones.... This is the citric acid i use Milliard Citric Acid 1.88 LB - 100% Pure Food Grade Non-GMO Project Verified, Bonus Scoop and User Guide: Amazon.com: Industrial & Scientific
Billy the Mountain
Well-Known Member
Citric acid absolutely positively completely dissolves in water, 100%.
Maybe try some distilled water?
It's not the citric acid clogging your sprayer.
Maybe try some distilled water?
It's not the citric acid clogging your sprayer.
Wastei
Well-Known Member
Regular pressure sprayer, the o-rings break on them but they never really clog.
Is there a 3% peroxide mixed with water I can use on my plants instead of the citric acid? Or is citric acid better?
I can't keep buying distilled water