Is this a potassium deficency?

HowardWCampbell

HowardWCampbell

New Member
My two largest plants that are having these same symptoms. I've looked through the faq, but nothing seems to look exactly like my leaves. +rep for anyone that can figure it out.
 

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I used 5-1-1 fish emulsion once. Also some half strength chicken manure 5-3-5. Soil is fafard organic, it has a little N, but I don't think it's much. Only other thing I've added is one watering with 1/2 strength super plant tonic. I'm trying to stay organic, I've heard it's a little harder to burn plants that way.
 
It may be harder with organic nutes, but from everything ive heard you shouldn't be using any nutes for the first month or so. I'd flush the plants and just feed using plain water for the next week or two. Just my oppinion. How old are they??
 
The one in the pic is a little under two weeks. The larger one will be 3 weeks tomorrow. I have another thread in the newbie forum with pics of the larger one.

This is my first grow and it's really starting to worry me. It started with the larger plant, and now most of my other plants are showing some yellow as well. Most haven't been fed any nutes because they are younger. They were doing great until I moved them to my new cabinet. I don't know if it's just a coincidence or not, but I don't know what to do.
 
bonghits4all said:
yellowing is either because of too much water or not enough nitrogen.I think you probly just over fed them.
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Overfed them or overwatered them? I used the fish emulsion about 10 days ago, before the yellow began. The chicken manure was added after the yellowing began as I was thinking it may have been an N deficency.

The reason I'm thinking deficency is because almost all of my plants in that soil seem to be going through the same thing although most are not as bad as the pictures. I really don't know, and I'm not trying to argue. I will try plain water for a week or so and see if I notice any improvement.

Thanks for all the help so far.
 
over water obviously because you clearly stated you gave them n.Why are you giving 3 week old plants anything?Fafard soil haas a starter boost of n allready in it.And you should only have to give them water twice a week at most.Stop over thinking let the soil dry out .And lay off the fish.
 
I had read that fish emulsion was safe for seedlings, but in hindsight, you're right I'm probably just overthinking it. I'll stick with plain water for another week or two and see what happens. I've got more young seedlings on the way, so I'll see if they do the same thing without getting any fish.

bonghits, have you used fafard? I haven't been able to find much info on them anywhere.
 
i didn't read the posts; i'm finding that's a waste of time here anymore, lots of bad info.

that is not a deficiency from normal growth. that is a ph imbalance. i'm going to go on a limb here.... are you using stagreen soil? yes? there's your issue. feed heavy with miracle grow, hi nitrogen formula once, and go back to normal feeding schedules. the mg will help correct the ph issue, and put enough nitrogen in the soil to help the plant get back up fairly quickly (7-12 days).
 
kindprincess said:
i didn't read the posts; i'm finding that's a waste of time here anymore, lots of bad info.

that is not a deficiency from normal growth. that is a ph imbalance. i'm going to go on a limb here.... are you using stagreen soil? yes? there's your issue. feed heavy with miracle grow, hi nitrogen formula once, and go back to normal feeding schedules. the mg will help correct the ph issue, and put enough nitrogen in the soil to help the plant get back up fairly quickly (7-12 days).
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actually hes got plenty of n between the fish and the soil.he overwaterd
 
it's a peat based soil, with visible pieces of bark. such soils are generally acidic (meaning low ph, good for things like roses and tomatoes, not pot) and cause stunted growth and yellow. the ph issue locks out nutes, causing the yellow.

the miracle gro i advised using buffers to around 7.3-7.8, and will generally help bring up the ph, and stabilize it.

but, you don't have to take my word for it. :blsmoke:
 

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yellowing leaves is the 1st sign of overwatering.overwatering suffocates the roots which locks out nutrient intake.Has nothing to do with ph genius.But you dont have to take my word on it
 
kindprincess said:
i didn't read the posts; i'm finding that's a waste of time here anymore, lots of bad info.

that is not a deficiency from normal growth. that is a ph imbalance. i'm going to go on a limb here.... are you using stagreen soil? yes? there's your issue. feed heavy with miracle grow, hi nitrogen formula once, and go back to normal feeding schedules. the mg will help correct the ph issue, and put enough nitrogen in the soil to help the plant get back up fairly quickly (7-12 days).
Click to expand...

not stagreen soil, it's fafard. soil pH is 6.8, water pH is 6.7. No mg for me, I'm trying to stay organic.

This is what's confusing me so much, seems like have the people say too much N, and the other half say too much. Maybe I ought to give one plant some more N, and plain water to the other.
 
bonghits,
Have you had any trouble with the fafard? Is it the organic mix? Any alterations that need to be done to it? It was the only organic I could find locally, and there is not much info at all about online. I haven't really seen any complaints about it though. Thanks so much for all your help. +rep
 
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