Plant turning yellow, need help saving It!

[Sangg]

Hello! Thank you for all the help you can provide, I am very lost here. I have this plant that seems to be stunned, there have been several days without any new growth and is getting more yellow.

I have a small indoor grow room with 3 autos, the three of them have the same soil (comercial soil) and receive water when top of the soil is dry. I have feed them with epsom salts, wood ashes and banana peel tea in flowering stage. Two of the plants are doing good, but this third one has been strugling. I believe that I might have added too much ashes to this one plant trying to comensate for some deficiencies, generating a ph problem. Today I flushed the plant hoping It gets better, but I am afraid it might need some additional nutes, maybe nitrogen??

Temp of the room: 25-28° humidity: 50-70%

Thank you for any advice, its greatly appreciated!!

 

[crimsonecho]

seems like you have an idea about what you did wrong there. wood ash is highly basic so you most likely locked out a lot of stuff in your soil.

i have never ran into a smillar issue tbh you can try to flush with phed water more until you wash most of the wood ash away from the medium and then start using just a basic liquid wormcastings for your feeds. also topdressing with ewc would most likely help. them being autos and already flowering will hurt your yields significantly.

also stop with wood ash in general. wood ash you can mix it with your medium in very small quantities if you have an accurate way to measure your medium ph but its not good for plants which likes neutral or acidic soil.

 

[HydoDan]

The wood ash raised your ph above acceptable levels (7.0) Pretty much locks out all nutes..

 

[Sangg]

seems like you have an idea about what you did wrong there. wood ash is highly basic so you most likely locked out a lot of stuff in your soil.

i have never ran into a smillar issue tbh you can try to flush with phed water more until you wash most of the wood ash away from the medium and then start using just a basic liquid wormcastings for your feeds. also topdressing with ewc would most likely help. them being autos and already flowering will hurt your yields significantly.

also stop with wood ash in general. wood ash you can mix it with your medium in very small quantities if you have an accurate way to measure your medium ph but its not good for plants which likes neutral or acidic soil.

Thanks for the feedback! Where I live I think is kinda complicated finding worm castings. Do you think that a general acidic soil fertilizer of npk 6-1-5 would do the job?

 

[crimsonecho]

Thanks for the feedback! Where I live I think is kinda complicated finding worm castings. Do you think that a general acidic soil fertilizer of npk 6-1-5 would do the job?

just start your own bin if its hard to get ewc. homemade ewc is million times better than bagged stuff anyway. so easy to maintain a small ewc bin and tossing fruit and veggie scraps to feed the worms.

cannabis doesnt like acidic soil either. acidic soil is like for blueberries and stuff. cannabis like more neutral/very slightly acidic medium ph between 6-7.

 

[LewberDewber852]

just start your own bin if its hard to get ewc. homemade ewc is million times better than bagged stuff anyway. so easy to maintain a small ewc bin and tossing fruit and veggie scraps to feed the worms.

cannabis doesnt like acidic soil either. acidic soil is like for blueberries and stuff. cannabis like more neutral/very slightly acidic medium ph between 6-7.

Where is the best place to get the worms? What worms are best/appropriate for a bin?

 

[Sangg]

.

just start your own bin if its hard to get ewc. homemade ewc is million times better than bagged stuff anyway. so easy to maintain a small ewc bin and tossing fruit and veggie scraps to feed the worms.

cannabis doesnt like acidic soil either. acidic soil is like for blueberries and stuff. cannabis like more neutral/very slightly acidic medium ph between 6-7.

Yeah I was actually thinking about doing my own ewc. Probably will do that
But for a quick solution for this plant do u have any suggestions? Its looking very yellow i am afraid of loosing the whole plant.

Thanks again !

 

[crimsonecho]

Where is the best place to get the worms? What worms are best/appropriate for a bin?

most people use red wigglers and they order it from ewc farms and breeders. they are the fastest decomposers with big appettite but in any case you can even harvest some earthworms from your garden or some fertile soil and let them multiply in your bin. they will still produce high quality ewc.

.

Yeah I was actually thinking about doing my own ewc. Probably will do that
But for a quick solution for this plant do u have any suggestions? Its looking very yellow i am afraid of loosing the whole plant.

Thanks again !

the thing is as i mentioned they are autos which are already flowering so its hard to do any corrections at this point. adding fresh organic material is always helpful (ewc and compost) and some fresh soil on top if you have the space. other than that i really dont see a solution for this plant other than feeding with correctly phed balanced feeds. something with a ratio close to 1-1-1 and micro nutrients. and since this is an auto always feed on the lower dossages.

also there was a conversation about ph corrections and @DoubleAtotheRON had some good advice to some other grower. as i mentioned i never had to correct ph in soil so maybe he can give you some better advice on the issue.

 

[Modern Selections]

The banana peel has an NPK value of roughly 0.1-0.1-2.3

Wood ash is roughly 0-1-3

Epsom Salts are 0-0-0 but add some Mg and S

So as you can see you are adding plenty K but not much else.

Best course of action would be to find a good veg base nutrient and feed them well. Make sure to adjust the pH to 6.2 after mixing the nutrient solution.

 

[Everytimefoo]

N and this isnt something you want happening during flower. Gonna be a rough harvest ill be honest with you.

 

[DoubleAtotheRON]

As advised, I would flush with plain ph'd water, 3 times the volume of the pot, and then do a regular flower feeding immediately after to get things back in balance.