Hi, yeah like @E_heroi says we are going to need more information as it could be a number of things.
If I assume your girl is in about week 4 or 5 of flower and you have been feeding her nutrients regularly, then I would suspect a nutrient lock out issue is playing havoc with your potassium uptake. If you think that might be the case, then flush her really good with PH'd water and then go back to your regular feeding but add in a straight water feed every couple of feeds.
I'm really going out on a limb as we only have the one picture to work off of and I might be completely wrong, so if you can provide more information that would help.
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My guess without knowing anything about the plant - calcium deficiency. More info: https://www.mrgrowit.com/post/calcium-deficiency-in-cannabis-plants Lots more information is needed in order to properly diagnose though. Read this post so you know what to include:
https://www.mrgrowit.com/forum/grow-community/read-me-first
Hi, yeah like @E_heroi says we are going to need more information as it could be a number of things.
If I assume your girl is in about week 4 or 5 of flower and you have been feeding her nutrients regularly, then I would suspect a nutrient lock out issue is playing havoc with your potassium uptake. If you think that might be the case, then flush her really good with PH'd water and then go back to your regular feeding but add in a straight water feed every couple of feeds.
I'm really going out on a limb as we only have the one picture to work off of and I might be completely wrong, so if you can provide more information that would help.
Good luck
give more info its not enough bro . more fotos and more info like EC / PH /temp / humidity