White spots on leaves?
- Thread starter tkmk
- Start date
viktorschau
Member
looks like the start of powdery mildew
brew up some cinnamon sticks (2-3 in 1L of water), let it cool down and mist your plants.
You have air circulation issues, need to up ventilation.
Make sure you mist your plants in a very aerated area
Give your plants a good trim as well
dunphy
Well-Known Member
ACV = Apple Cider Vinegar
and Yes it is okay to spray flowering plants with the 3% peroxide, But obvious you want to avoid soaking the nugs without a fan or extra wind/nice weather to dry them out sooner.... Once they get fatter they'll take longer to dry and be more at risk, Although the h202 should help avoid any mold/mildew during that time its better to spray on a very light mist setting on your sprayer and try to get tiny droplets that will float through the air like a fog, you want to cover every spec of the plant, but again not too heavy on the buds, so aim for the areas directly affected, then focus on areas that are at high risk for WPM like very leafy/low airflow spots either up against a wall or something, or anywhere that leaves will be sitting on top of one another (this is mainly where I find it, it rains, weighs the leaves down, they start sticking to each other in those bushy spots of low air flow, dont dry and then a couple days later ill find a small spot and notice it... Also good reason to shake out your plants lightly after a rain to try to avoid all of this..) and then at the end give it a nice once over the plant and mostly try to spray from underneath any overspray going straight up should come back down and hit the tops of the leaves, and you want to start with the undersides because its a pain to do those once the tops of the leaves are wet and weighing them down.
What I like to do is grab a glove, and "grab" below the leaves, and run my hand up, then all the undersides are pointing up, you can spray, and then even let go of them to do the tops, or slowly lower your hand back down the stem. Heres a picture explaining what I mean, Which ends up kind of helping in veg because the gloved hand gets wet and your're rubbing whatever liquid you're spraying all over which could possibly be good coverage... Id be gently or not even do this in flower though, way too sticky. You can also spray directly down from the top (where the spray bottle is...) and it makes it easier to hit all those little ones, the undersides and tops at once, and then anything draining down will just recoat the lower leaves. Just something I've noticed that helps during spraying.
Cheers.
You're close enough to the finish where you can hopefully dedicate the time and attention to her to spray her down every few days, and then inspect very well... If you see any on any nugs, make your call to spray/cut/wipe if possible.. and you'll be fine.
Are these autos or light dep btw? When you said your were in mass did you mean Massachusetts? curious how you're this far into flower right now for an outdoor plant.
Last edited:
topcat
Well-Known Member
Yes. Yes, you do and here's how:
Gardening with hydrogen peroxide - Mixing Charts
How much water should you use with how much peroxide, in gardening with hydrogen peroxide? Charts for proper dilution for watering or spraying plants
www.using-hydrogen-peroxide.com
tkmk
Well-Known Member
thank youYes. Yes, you do and here's how:
Gardening with hydrogen peroxide - Mixing Charts
How much water should you use with how much peroxide, in gardening with hydrogen peroxide? Charts for proper dilution for watering or spraying plants
I have been seeing very occasional mild PM on my plants for a couple of weeks now. I wipe it off with wet paper towels and spray periodically with a weak peroxide solution (one part 3% H2O2 to five parts water). Last year I attacked it with a baking soda solution halfway through flowering, and that was way too harsh and browned quite a few pistils. Have yet to see any ill effects with peroxide, although I make sure to spray early in the day to avoid the overhead sun.
710in780
Member
I've used Q tips if it was a minor spotting but be careful of pistils if spraying!!!
dunphy
Well-Known Member
Just want to clarify my post and where you quoted me.... I wanted to make it clear I was talking about it being okay to spray 3% peroxide into flower... I've edited my post because I was answering the what is ACV question right before, and it looks like im talking about spraying the acv on in flower. if you could update your quote of my post just so we dont confuse anybody coming late into this thread and misunderstanding what was said. Thanks man.
viktorschau
Member
very commendable elaboration on the subject.