What's happening to my plants?

cindywhite

Active Member

• Aug 7, 2016

• #1

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.

 

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R1b3n4

Well-Known Member

• Aug 7, 2016

• #2

 

cindywhite

Active Member

• Aug 7, 2016

• #3

R1b3n4 said:

View attachment 3751856

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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.

 

cindywhite

Active Member

• Aug 7, 2016

• #4

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.

 

dannyboy602

Well-Known Member

• Aug 7, 2016

• #5

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

 

cindywhite

Active Member

• Aug 7, 2016

• #6

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.

 

dannyboy602

Well-Known Member

• Aug 7, 2016

• #7

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?

 

cindywhite

Active Member

• Aug 7, 2016

• #8

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.

 

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cindywhite

Active Member

• Aug 7, 2016

• #9

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?