Bottom leaves turning Yellow

A

AmbitiousRJ

New Member
I fed both plants yesterday the same nutrients and one of my plants bottom leaves started turning yellow on the edges and clawing .. I fed them Foxfarms BigBloom 4 Tablespoons 1/4 teaspoon floralicious plus and 1/2 ml rapidStart. I feed them both the same time every 3-4 days and every other water I give them nutes or just Rain water. One plant looks healthy but the other ones started clawing and turning yellow / brown any ideas what’s causing this ? And what should I do ? The first image is the healthier one the second is the one with damaged leaves
 

Attachments

A

AmbitiousRJ

New Member
twalte said:
Are you giving them any CalMag? If you’re using rainwater, you’re probably not giving them enough mag. Being on your older leaves, that’s my best guess.

www.growweedeasy.com

How to fix Cannabis Magnesium Deficiency (Mg) Pics & Symptoms

Does your cannabis plant have yellowing lower leaves between the veins? See pictures of a magnesium deficiency and learn the easy solution.
www.growweedeasy.com www.growweedeasy.com
Click to expand...
No I haven’t but I’ll use that on my next one and see how it responds thanks for your advice!
 
OldMedUser

OldMedUser

Well-Known Member
The only thing I see going on with the bottom leaves is one with what looks like a bit of nute burn or water damage from nutes maybe being splashed on it the last time it was fed? Very dark leaves indicates lots of nutes and the yellowing in the upper leaves will likely go away with more light exposure due to rapid growth of the plant.

A little CalMag won't hurt but don't go nuts. Too much is worse than not enough.
 
ColoradoHighGrower

ColoradoHighGrower

Well-Known Member
^^ this. Too much nutrients, possibly watering too frequently. Let them get thirsty and then give them a really good soak with just ph'd clean/aged water, lots of run off. Only h2o for 9ne or two waterings would be okay. Make sure you let the pot get pretty dry between waterings from now on, like a few days... let the plant tell you when it's thirsty!
 
polishpollack

polishpollack

Well-Known Member
The OP writes tablespoons instead of teaspoon. Is this the correct dose amount you're suppose to use? It sounds like way too much, especially for such a small plant. Also, aren't the bloom ferts suppose to be used in flowering, not vegging? I'm wondering if it's too much of the wrong nutrient.
 
OGBudz

OGBudz

Well-Known Member
polishpollack said:
The OP writes tablespoons instead of teaspoon. Is this the correct dose amount you're suppose to use? It sounds like way too much, especially for such a small plant. Also, aren't the bloom ferts suppose to be used in flowering, not vegging? I'm wondering if it's too much of the wrong nutrient.
Click to expand...
^^Good eye i didn't even catch that he wrote tablespoons, yep it's definitely supposed to be teaspoons.
 
Seed of Memory

Seed of Memory

Active Member
polishpollack said:
The OP writes tablespoons instead of teaspoon. Is this the correct dose amount you're suppose to use? It sounds like way too much, especially for such a small plant. Also, aren't the bloom ferts suppose to be used in flowering, not vegging? I'm wondering if it's too much of the wrong nutrient.
Click to expand...
Fox Farm Big Bloom actually says tablespoons in the instructions. So if you are to use it at full strength you would use tablespoons. I use it and I used 2 TBS for my last water. That and some Cal-mag put me at 740 ppm before water. Big bloom is basically an organic supplement. Its NPK doesn't even hit 1. Off the top of my head it is 0.7-0-0.5 or something like that. Even at 4 tablespoons I would think it would be hard to overdo. But you never know.
 
Seed of Memory

Seed of Memory

Active Member
Mind you, I'm no expert. But those leaves are at the bottom of the plant and sometimes they just die. The correct measurement is either tspn or tbs. It doesn't matter as long as it is the same in the end. You do need to add a cal-mag supplement though. Do you have a ppm meter? What kind of lights are you running?
 
Kassiopeija

Kassiopeija

Well-Known Member
AmbitiousRJ said:
And what should I do ?
Click to expand...
Except for CalMag, put the nutes back to the shelf.
Your new/fresh growth looks healthy green while the old leaves are too dark/ burned (potential Potassium abundancy)
Soil buffers as long as there are still nutes in it. At some point in the future simply transplant.
If you got good soil, itll basically do the feeding for you.
 
Seed of Memory

Seed of Memory

Active Member
OGBudz said:
I was wondering where you were getting 4 tablespoons from. Never noticed that on the bottle i just always looked at the feeding chart i have.
Click to expand...
Honestly, i had never paid attention to the differences between bottle and chart. I monitor my ppm so i don't typically follow the chart. But I cut my nutes in half from bottle instructions to 50% so 2 tbs per gallon.
 
You must log in or register to reply here.
Top