White spots

Atghhh PM! You are in trouble ! It’s a mold spore! So honestly, you are better to scrap everything (harvest now if you can—carefully clip those leaves)and clean out your area with bleach and then again with peroxide. The plants all need to be treated with peroxide and dr Zymes!. You need better air circulation. Good luck ✌️🏻💚🌿

That is definitely the fungas 'White Powdery Mildew', as others stated below. It is airborne, hence the need to carefully remove all infected leaves like #The8thChevron said below very very carefully and dispose in a well sealed bag or container. Once your grow is done it is important to clean the room, and tent, clothing, etc. very well as the spores will stay dormant until killed/removed and reinfection will occur. To clean you can use a fungicide. I'm not sure if a bleach or Lysol room spray will work but that could be worth a try as it is not as costly and easier to perform. Powdery Mildew thrives in higher humidty (above 55%) and cooler temperatures, so you may need to increase your ambient temp and reduce the humidty a little in the process. There is oil treatments and the milk treatment which is the most common method. Whatever it is you need to be on top of it. Like #Weezy90 said you can perform a milk spray (40% milk & 60% water) during lights on (it needs the sun/artificial sun to cause the fungicide reaction) Another article that nay be of help. https://www.ilovegrowingmarijuana.com/powdery-mildew/ Great Luck & Happy Budding to you :)

Hey there, it looks like odium as The8thChevron mentioned above. You say you're at the end of flowering, how much time do you have left to see if there's still time to do something and treat the affected areas or just remove the touched leaves 🍃 ?

Looks like white powdery mildew. Very carefully remove every leave affected. You don't want those leaves to touch any others and you don't want to disturb the leaves in anyway that might disperse spores. Remove quickly and carefully. Keep a close eye on your plants, there's likely to be other affected areas that aren't yet noticeable.

Hi! You have a problem with powdery mildew, a fungus. I'm sharing a link so you can read about it and treat your plant correctly. There's a handy solution that most growers have at home, a mix of milk and water. It's explained in the article🙂 https://www.dutch-headshop.nl/blog/wiet-meeldauw-bestrijden Good luck!🌱

Looks like it could be mildew, is it all over the plant? You'll get a better understanding if you google it, look at some photos and see if it's similar.