Help diagnose spots on leaves

Hey. I've got this plant that's about 2-3 weeks away from harvest. This past week, spots started to develop on the leaves. I've been feeding Dynagrow regularly.
I've also noticed the same spots on a couple autos I've got growing that are about six weeks away from harvest. But they aren't appearing on a Dinafem Cheese that's been on the same feeding schedule. So I'm not sure if it's a pest, disease, or nutes issue. Can anyone advise?


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Your plant needs more calcium and probably magnesium as well, provided that your ph is within range. I use calmag when I need to. It's always a good idea to have some dolomite lime in your soil mix before you do your planting. Good luck, hope this helps.

that late in to flower i would do humic fulvic root drench,cleans root and stimulates the over all plant,it also adjust your ph,looks to me you been hitting them with a boast and your ph is messed up a little,just my opinion ,but when i come across any issues i do a root drench and within a couple days it always gets better,less headache than wondering all the time,like i said just my opinion ,the one is not far from flush anyway it should start yellowing up ,but my recomendation is for any stage and when you harvest you will see the prettiest roots all white ,if you gonna reuse your soil clean it and charge it and use the the root drench at least 1 a month and you want have many issues after that,thats what works for me anyway,hope i helped a little,good luck

Add dolomitic/garden lime to your soil, it facilitates stabilizing pH, and adds calcium over time. What is the PPM of your water? If it's lower than 150, add cal-mag to bring PPM up to at about 150 ppm.

Calcium issues for sure.

Thanks for all the good advice. I just ordered some calmag from Amazon. I'm also going to look into that humic fulvic root drench

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DesertGrow89 said:

What is the PPM of your water?.

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I've never tested this, but I do get it to the proper pH before feeding and watering.

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