Darkening leaves and red stems?

[BillyWu]

Hi there folks. I've just spotted this leaf on my plant:

And I've also spotted quite a few stems seem to be going red:

Can anyone tell me what this is please?

 

[Hugo]

Hey Billy!

Can you spare 2 minutes of your time and fill out the sticky form on the Infirmary forum? There's a few things people should know to proper diagnose. Would be much appreciated!

 

[JM]

Phosphorous: Entire plant is bluish-green, often developing a red or purpleish cast; lower leaves may be yellow, drying to a greenish-brown to black color; growth may be stunted...

Potassium: Leaves have a papery appearance; dead areas along the edges of leaves; growth is stunted...

looks like those 2 to me... however... you'll need to check your ph to be sure.

also:

https://www.autoflower.org/f7/basic-deficiencies-list-11.html

 

[Hugo]

at the top of my head Phosphorous is what rings the bells too, but it depends on a numerous things! pH, feedings, temperatures, the age of the plant, etc.

That's why I ask to people to fill The diagnostics form. I give rep to people that do

 

[BillyWu]

Alright folks, thanks :] Thankfully it's only affected that one leaf and it may been due to accidental over watering. Just gonna have to take more care next time, was trying to get a measurable run-off and over did it :]

 

[Hugo]

Never heard over-watering doing that but over feeding yes!

good to know things are better over there. Keep working that monstrous plant Billy!