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Grow QuestionsJust noticed a couple of leaves on one plant are s...

Just noticed a couple of leaves on one plant are s...

DixonCiderstarted grow question 4 years ago

Just noticed a couple of leaves on one plant are showing some ‘yellow’ spotting. Tried to diagnose but I am unsure what it is.

DixonCider

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Leaves. Color - Yellow

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Frodoanswered grow question 4 years ago

PH fluctuations or a beginning of root rot, have you checked the pH and color of the roots?

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NobodysBudsanswered grow question 4 years ago

raise your pH as first try to increase Ca availability.. i bet you provide enough and it is pH related. think of ~5.5 for hydro as a guideline that should be disregarded when you see problems. my hydro fertilzier specifically says to use at 6-6.5. They know better than bro-science on web. they have phDs and labs and tests.. et al..

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Fruitgroweranswered grow question 4 years ago

It looks like magnesium deficiency to me. Give that a Google and see if it matches your plant. Easy to fix. If not I suggest check for bugs under the spots....!👍🌱

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Nor_Cal_Kannablissanswered grow question 4 years ago

leaf septoria is characterized by yellow and brown spots forming on both the upper and lower sides of leaves. The spots tend to be circular with dark brown margins and tan or greyish centers. They usually measure between 1.5 to 6.5mm. If this seems like what you got look into it. Here's a link. https://www.royalqueenseeds.com/blog-leaf-septoria-yellow-leaf-spot-on-cannabis-plants-n678

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I have uploaded a few more pictures - getting worries as the yellowing is continuing. Any ideas? pH was 5.6 on Saturday when I first mixed the nutes), and then with the air stone has come up to 6.5 or so. I've added a small amount of pH down to temper this back down.

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I know it is normal for the leaves to yellow in the flowering stage but it is only 3 week and 5 or 6 leaves become yellow on the bottom should i use more nitrogen to prevent it or let it be ?

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5 years ago

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Yellowing seemed to stopped spreading ,im not sure what deff is that .No yellowing on the small leaves on the buds . I gave some cal mag 1 week ago and spreading seemed to be stopped but it turnes so yellow very quickly

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5 years ago

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6 years ago

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It's been a week since I switched to flowering and new growth on the plant all has a yellow/lime green colour but this seems to go away when the leaves fully grow out and growth in general has not slowed down. Based on the pictures in my diary should I be concerned?

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Anxious_Passenger

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6 years ago

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6 years ago

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After noticing calmag deficiency in some other ladies I preventativly hit everyone with cal mag. Few days later see yellowing on leaves (pic above). Could they need more cal mag? Also looks like could be nitrogen deficiency? Thanks for any help with this issue.

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6 years ago

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