What's happening to my plants?

Im growing outdoors in Northern California so I'm entering flowering right now. I noticed that 2/3 plants have some black growing on some of their new leaves. It looks like a phosphorous deficiency, but it's weird where the black is forming at the base of the leaf. There is 1 leaf with a black tip. The third plant that I feed the same amount looks great. They all look great minus the black on the other 2.

R1b3n4 said:

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Yes I saw that, but like I said it is blackening at the base on all of the leaves. It's also black. Very dark black. This is describing more of a blue/ green.

I've been feeding them botanicare cs17 veg (3-1-2). Do you think I need to switch to the transition nutrient with 2-2-3? With a little more phosphorus? I was told to wait until there is dime sized buds to even think about a transition when growing outdoors.

Ima guess your in ur rainy season now and so perhaps its a fungus.

dannyboy602 said:

Ima guess your in ur rainy season now and so perhaps its a fungus.

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It hasn't rained 1 time since I've planted. I don't even think I've seen a cloud.

cindywhite said:

It hasn't rained 1 time since I've planted. I don't even think I've seen a cloud.

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So no fungus then...I'm at a loss for tox/def ideas...how's the rest of the plant look?

I think they look pretty good. They're drooping because they're thirsty and I'm trying to figure out what to feed them. You can't even tell where the problem is because it's only on 2 leaves on each plant I believe. It's on the newer leaves. The third plant looks like them with no blackening at all.

I just fed them botanicare cns17 transition 2-2-3, so if it is a phosphorus problem then it shouldn't get any worse. Right?