White spots on leaves. Thoughts anyone??
- Thread starter West30
- Start date
hotrodharley
Well-Known Member
What type of light and how close to it are these leaves?
DavidfromMichigan
Member
Powdery mildew. There are endless remedies on the net. Take care of it now before its gets out of hand.. which is real quick.
It's not powdery mildew. PM shows up as fuzzy looking white spots. I've never seen this. Unless someone comes up with a definitive answer, you might just want to keep an eye on it for a few days to see if it worsens or spreads. If it's just one plant showing it, let it grow and see what happens.
DavidfromMichigan
Member
Powdery mildew always starts at the tips. That's where the morning dew always rests. Opinions vary.
xtsho
Well-Known Member
No it doesn't and that's not PM anyway. I don't know where you came up with it always starts at the tips from but that is incorrect.
Kushash
Well-Known Member
Not sure I've ever seen this before so if it doesn't rub off my guess would be some type of genetic thing, not PM.
The overall color of the leaves look pale like the plant might be hungry for something, maybe Magnesium or if it's a poor-quality soil might need a balanced feeding.
The overall color of the leaves look pale like the plant might be hungry for something, maybe Magnesium or if it's a poor-quality soil might need a balanced feeding.
cougheeesm
Well-Known Member
Wow, this is actually pretty interesting damage. It's very uniform, like light or nutrient toxicity. 100% NOT Powdery Mildew. Most likely nutrient toxicity since you say your light is 36in above the canopy. Maybe a mutation, but I am thinking it's toxicity.
What is your feeding program, and what is the growing medium?
Also, can you share another picture of the damaged closer in without it getting too blurry? I would like a better look at the damage itself, if possible.
What is your feeding program, and what is the growing medium?
Also, can you share another picture of the damaged closer in without it getting too blurry? I would like a better look at the damage itself, if possible.
Thanks for the input. Here’s a another picture
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cougheeesm
Well-Known Member
No problem. Due to uniformity, I can be pretty sure it is not pest or mold/fungus related.
Can I ask what your feeding program is and what kind of medium they are in?
Can I ask what your feeding program is and what kind of medium they are in?
cougheeesm
Well-Known Member
Thinking about it a bit longer I remember this can be a common symptom of a deficiency, not only toxicity like I was thinking. Given the overall look of your foliage I am thinking of deficiency now.
When the areas between the veins of your foliage begin to yellow or lighten it is usually a sign of iron, manganese, or magnesium deficiency.
With iron, you will see younger foliage affected first. However, with manganese and magnesium, the older leaves tend to be affected first.
It would help to know what your program is... But, without knowing, I would just throw a suggestion for a Calcium Magnesium product. They usually have iron in them too.
Kushash was on it.
When the areas between the veins of your foliage begin to yellow or lighten it is usually a sign of iron, manganese, or magnesium deficiency.
With iron, you will see younger foliage affected first. However, with manganese and magnesium, the older leaves tend to be affected first.
It would help to know what your program is... But, without knowing, I would just throw a suggestion for a Calcium Magnesium product. They usually have iron in them too.
Kushash was on it.
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cougheeesm
Well-Known Member
Also get some IPM going asap
DavidfromMichigan
Member
I've seen this on my plants multiple times. You can either take advise from someone that's seen it before, or from someone that's got a PhD in internet browsing. Here's my remedy for just about everything. You can use it all the way through flower. Very safe. For any plants. I use it on my orchids, violets, roses, peonies, cannabis.https://youtu.be/ej-NJjEJJ6U