I have small brown spots on the fan leaves of 3 week old plants. Could it be light burn or a nutrient deficiency? I use grow lights
Welcome to the forum.
Pics or it didn’t happen.
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I have a few pictures. Can you tell me how to post them as I haven’t done that before?
There is an icon near the top of the reply window. Click on it and it will give you options for uploading files.
What is the humidity in your grow space? Are you misting the plant with anything?
It’s time to put her in a bigger pot.
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Midwest, I am actually an outdoor grower. We hadn’t had sun in several days so I put them back under the lights for a few days.
So far I’ve used a weak mixture of fox farms grow big. This is only my 4th grow but the first 3 were a success. I have 3 other plants in bigger containers. That one is my backup.
I mist them about once a week or as needed with Bergmans bug blaster
The humidity has been running 45-55% outdoors here. Thank you for any help you can give me
Got it. It looks like mold spots. I would treat it with a dilute water/peroxide mix and see how it goes. You may struggle with mold the whole grow if outdoors and seeing problems already. Increase airflow in the area if possible.
Ok thanks brother. What is the ideal humidity range and what part peroxide to water?
< 50% I try to run my plants at 40 to 45% in flowering. You can get away with a bit higher in the veg stage.
4:1 water:peroxide is what I do.
Thanks man I’ll let you know how it works out. Guess I’ll have to get a fan out there
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Hopefully well. Unfortunately these types of issues are common during the outdoor grow season. Keep us posted.
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Midwest, these are my latest pictures. I sprayed the peroxide on about 3 times and put a fan to them. Didn’t get any worse and I pinched off the few bad leaves. The new growth looks good. Question - I only grow auto’s outside. That one is looking a little leggy? Most everyone says not to top an auto? Have you any experience there? I’ve never topped and always just get that one nice size cola. Thanks for all of your help
I started getting the first pistils on one of the plants
It’s impossible to predict when an auto will flower, and it’s not a good thing to induce stress during flowering.
Your plant is now flowering.
Your plants are stretching. Get them as much direct sunlight as possible. Cannabis is a very light hungry plant.