White stuff on leaves (I know how that sounds)

The past 3 or 4 days, on one plant, I have been finding a greyish/whitish residue on one or two fingers of two or three random leaves.
It almost looks like when I put Sevin on my veggies and it gets rained on and the powder turns into a drip.
**It is only on a couple random leaves, doesn't appear to have dripped from leaves above, and is not in any of the flowers.
I haven't had any rain recently until today, and I don't get the leaves wet at all when I water, but my daytime temps have dropped the past week about 10 degrees to 80's, and my night time temps have dropped to 50's-low 60's.
Sorry, no pics because I have been clipping the affected fingers off, afraid it would spread.
Any ideas?

do you really have 1000 post's in one months time?

ya you and every other grower who has been growing for more then ten minuets . . .its PM hope your not in flower or your fucked . . .. . i have a few threads on it . . . . . if you want to combat it on a daily basis . . .spray leaves only with DM zone i dont know dilution rates but i know it works


or its thc and your doing fine lol

OK, I'll look at some pics and go from there.
TY

Powdery mildew! noooooooooooooooooooo!!!!!!!!!!!!

Well, at least it's only affecting a little of a couple leaves here and there so far.
I was just reading on peroxide, or skim milk.
Any thoughts here on preference?

There was a thread about this not too long ago.

In that thread they concluded it was most likely bird shit. Could that possibly be it?

Thanks! Wish it was, I remember that one.........
But it shows up like a couple drops of milky white water dried on the leaf.
It's not fuzzy, not on leaves above or around, and if I lick my finger, it will rub off.
It looks like after a rain, when a plant has been sprinkled with Sevin dust.
I'm still trying to decide for sure whether or not I may have dusted this when it first went into flower and started getting a couple holes in the leaves.