Did you foliar feed them? Did your rooting concentrate splash on leafs? Lightly take your finger(s) and rub some of it off. Does it feel salty? Salty feel will be fert./ rooting concentrate or other contaminant and should just wash off the leafs. Powdery (no feel to it at all)? powdery mildew treat with baking soda. WORD of CAUTION: Only rub one leaf then wash your hands...you can spread it to other plants if it is powdery mildew.
If it is PM you should be able to wipe it off with your fingers and you should definitely be able to wash it off.. It looks like something in your water prob calcium. What kind of water are you using to mist them?
Well, I just got them today and the "PM" wasn't there when I bought them; they were perfect! I had to drive a long way to get them, and I took that pic after they hadn't been sprayed with anything for 5 hours. So the white stuff that showed up either developed in the car ride or came from whoever sprayed them right before I bought them.
Well, I just got them today and the "PM" wasn't there when I bought them; they were perfect! I had to drive a long way to get them, and I took that pic after they hadn't been sprayed with anything for 5 hours. So the white stuff that showed up either developed in the car ride or came from whoever sprayed them right before I bought them.
Mildew would not just show up in a matter of hours, and not that intense. You would likely see a small spot of fuzzy white which takes a bit of time to spread. From that picture it really does look like a salt build up of some time.
it could easily be something that was sprayed on them. it doesn't look like P.M. from the pic. It could be that they were sprayed with beneficials. The tea I make with caps bennies will sometimes leave some white residue on the leaves from the microbes.