stalk is getting purplish towards the top and fan leave stems ?????

that's what I was thinking cause I was using cal mag and it just started flowering I shoulda already hit it with it I don't know why I didnt
 
Your plants look fine very healthy. Purple stalks and stems can be perfectly normal or a sign but they look just fine. Can be genetics, cooler temps can do it.
 
Genetics doesn't start purpling during flower. It's the lack of magnesium that causes that. I have a plant that is doing the same thing. I foliage feed it Epsom salt for a few days and all new growth did now purple. As I stopped, new growth purpled. I don't have pics of it but you can view my grow journal in my signature. Best to start giving it some magnesium. but I don't think you REALLY HAVE TO unless it's REALLY looking fucked up and purple.
 
BSD0621 said:
Genetics doesn't start purpling during flower.
Click to expand...

Genetics can be the cause of purple stems.. Phosphorus and Magnesium def can cause purple stems... it can also just be a genetic thing.

mixing in dolimitic lime is a popular method for supplying mag in the MJ world.
 
Those look fine. I wouldnt worry about deficiencies unless youre seeing signs of it in the leaves, and those leaves look lush and healthy
 
I watched a video about LED lights from a large grow. The plants were in flower. The grower was being interviewed and mentioned the slight purpling was a good sign of protection against disease.

I think yours qualifies, but extensive purpling is often a sign of deficiency
 
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