I’ve seen a few different answers.i seen some answers say it’s the nutrients or just the genetics. What seems to make the most sense,
Usually purple red stems come from led lighting. Could in a way be a nutrient issue but that small id go with it is the led causing it and it should not do any harm. Maybe it is a hair bit too much light for thatblittle ine at the moment. I run led and every plant i grow has the red purple stems after so long of being under the lights.
I used spring water with a ph of 6 i added a little bit of hp to it maybe i added too much… I’ve been using spring water with a ph of up to a 6.3 usually around 6 for my other plants is naturally around 6 without ph down because it’s in the range so i wasn’t adding it the last 2 times but before it would be around 5.7 up to 6 so maybe i will start bringing it a down a bit more they seem happiest in coco around 5.7
No…purple hard stems are not good…stems should be translucent and flexible, healthy glowing looking…if they are hard and deep purple it is probably from 1…nutrient lockout P&K due to needing cal mag or too much cal mag…it is not a good thing because it is blocking uptake.
I see they are seedlings…probably whatever you used to soak the rooters caused lockout…whether it was a solution or just plain water.
What is your water pH there?
Personally, I’m less inclined to believe anyone saying it’s “because of LED lights” or it’s “genetics”. Purple stems are usually a sign of mag deficiency. If your LEDs include a lot of UV, then mebbe it could be the lights, but I dunno because they otherwise look pretty happy and I’d expect UV stress to do more than just make the stems purple. Are you using an old “blurple” light? 'Cause in that pic EVERYTHING looks purple. lol
Genetics could be a factor, but if it were me, I wouldn’t just assume that and do nothing unless I found reports online of people growing the same strain and seeing the same thing. Overwatering shouldn’t turn stems purple as far as I’m aware. One question I have: is the one that doesn’t have a purple stem the one that’s in a different substrate?
1 in rockwool with purple 1 with half purple in peet cube 1 with green kind of leggy in peet cube haven’t moved them into a final medium yet but i have 1 plant in flower that has purple stems just on the fan leaves that are left and like striped up the main stem besides that it’s my healthiest one so i just didn’t know if it meant something i should be worried about because it’s been on healthy and non healthy plants I’ve noticed it
It’s also representative of insufficient calxium which can ultimately can cause nitrogen lockout…
Basicly the majority of the purple is most times stress. Sometimes its a purple pheno.
Plants turn purple as a stress response due to the accumulation of anthocyanin pigments. These pigments, typically red, blue, or purple, are secondary plant metabolites that act as a protective mechanism against various stresses like oxidative stress, high light, and ultraviolet radiation. When plants are under stress, genes responsible for anthocyanin synthesis are activated, leading to increased anthocyanin production and the characteristic purple coloration.
Such as grapes produce this and give it its flavor. Its a very interesting topic. The purple is actually a bug repellant.
5.8 to 6.5 is just fine, every chart I have seen puts all the nutes they need all in that range, if you vary it up and down a little 5.8 one time and then 6.3 the next you will give every nutrient it’s optimal absorption range.
Marty
