moash
New Member
i understand that they dont need nutes yet,,,,theyre still young
but he asked what caused a N def so i told him....
i thought epsom salt was a magnesium supp???
y would he need that
Light green leaves
- Thread starter Superlevs
- Start date
but he asked what caused a N def so i told him....
i thought epsom salt was a magnesium supp???
y would he need that
ROBINBANKS
New Member
A small amount in a foiler spary should clean them out.
Or he could also use some Tomato feed with seaweed extract.
moash
New Member
nice to know
ROBINBANKS
New Member
From the masters of RIU...
Marijuana Plant Problems and Cures
Before we get into this I want you to check a couple things, check the following things:
Bigger leaves are turning a yellowish color while the smaller leaves are green.
turning dark gray.
Before we get into this I want you to check a couple things, check the following things:
- Plants have plenty of water
- Soil is seven PH or even a little less
- Your light cycles are correct
- No pools of water
- Constant fresh air
Bigger leaves are turning a yellowish color while the smaller leaves are green.
- Nitrogen deficiency - add nitrate of soda or organic fertilizer.
- Phosphorous deficiency - add commercial phosphate.
- Magnesium deficiency - add commercial fertilizer with a magnesium content.
turning dark gray.
- Potassium deficiency - add muriate of potash.
- Boron deficiency -add any plant food containing boron.
- Zinc deficiency - add commercial plant food containing zinc.
- Molybedum deficiency - use any plant food with a bit of molybdenum in it.
ROBINBANKS
New Member
Epsom Salts
I feel I should say a few words about the use of Epsom Salts in cannabis cultivation.
All green plants produce their own food from water, CO2, and light, by a process named photosynthesis. The chlorophyll molecule, which is essential to photosynthesis, is coloured green and contains one atom of magnesium. So adequate magnesium is absolutely vital to the growth of green plants.
If there is a shortage of magnesium in the plant´s nutritional intake, an early indication is the yellowing of leaves. It is easy to remedy any deficiency by feeding a dilute solution of Epsom salts, MgSO4, in a concentration of about a teaspoon to a gallon, two or three times in the growing season; a little goes a long way.
Magnesium deficiency is distressingly common, many commercial soils contain little or none of the element, and many ferts only contain tiny amounts of magnesium, if they contain any at all. And growers do not always appreciate its importance.
But magnesium deficiency is not the only cause of leaf yellowing - a shortage of nitrogen can have similar symptoms, but this is MUCH less common as most of us routinely feed nitrogen-containing ferts. Some pests, such as red spider mite, can cause leaf yellowing, as can a whole host of viruses to which your ladies are susceptible. And don´t forget it is normal for the lowest leaves on the plant to yellow and die. They have done their job, and your buds are now being fed by the products of the photosynthesis being carried out by the fan leaves.
But if you do have a problem, I do recommend that you try some Epsom salts in the first instance. It may well not be the answer for your problem, but it very often is.
I feel I should say a few words about the use of Epsom Salts in cannabis cultivation.
All green plants produce their own food from water, CO2, and light, by a process named photosynthesis. The chlorophyll molecule, which is essential to photosynthesis, is coloured green and contains one atom of magnesium. So adequate magnesium is absolutely vital to the growth of green plants.
If there is a shortage of magnesium in the plant´s nutritional intake, an early indication is the yellowing of leaves. It is easy to remedy any deficiency by feeding a dilute solution of Epsom salts, MgSO4, in a concentration of about a teaspoon to a gallon, two or three times in the growing season; a little goes a long way.
Magnesium deficiency is distressingly common, many commercial soils contain little or none of the element, and many ferts only contain tiny amounts of magnesium, if they contain any at all. And growers do not always appreciate its importance.
But magnesium deficiency is not the only cause of leaf yellowing - a shortage of nitrogen can have similar symptoms, but this is MUCH less common as most of us routinely feed nitrogen-containing ferts. Some pests, such as red spider mite, can cause leaf yellowing, as can a whole host of viruses to which your ladies are susceptible. And don´t forget it is normal for the lowest leaves on the plant to yellow and die. They have done their job, and your buds are now being fed by the products of the photosynthesis being carried out by the fan leaves.
But if you do have a problem, I do recommend that you try some Epsom salts in the first instance. It may well not be the answer for your problem, but it very often is.
This is all so confusing but i am to absolutely obey everything you guys say. I am now near flushing them and am using a very weak nutrient solution.
I have removed some mylar too. I am reducing the light to 18/6. They were on 22/2. I will get epsom salts tomorrow. Will they turn around if i do exactly what you say?
I have removed some mylar too. I am reducing the light to 18/6. They were on 22/2. I will get epsom salts tomorrow. Will they turn around if i do exactly what you say?
ROBINBANKS
New Member
Yipp, ive never been a fan of 24/7 lights, does that happen with nature, 'no' plants need a break and respond better with a dark period, they will perk up but dude its not going to happen overnight, they are sick and need to recover but give it time ok.
some people will knock my advice or have their own opinion, ive grew weed for 10 years come dec, i have nothing to prove on this site, have some faith, and give them some time to recover with less fuss, keep in mind they are weeds, no-1 mistake people make.
OVER FEEDING YOUNG PLANTS !
some people will knock my advice or have their own opinion, ive grew weed for 10 years come dec, i have nothing to prove on this site, have some faith, and give them some time to recover with less fuss, keep in mind they are weeds, no-1 mistake people make.
OVER FEEDING YOUNG PLANTS !
ROBINBANKS
New Member
No probs dude, keep the grow room tidy, its the law, remember give them time to recover, give them routine, routine, routine.
And disolve the epsom in boiling water then add to the spray bottle, every now and then just spray with water so to avoid build up on the leaves. PLEASE DONT GO BONKERS WITH IT '''REMEMBER THEY ARE SICK''' nurse them back slowley, ill keep watch for your posts update.
I had a similar problem and posted it in this thread:
https://www.rollitup.org/marijuana-plant-problems/221041-newest-growth-yellow-near-stem.html
If you are using nutrients, I would change the water right away--use bottled water only (no nutrients) and PH adjust it to 5.9 or 6.0 I would also think about adding epson salts (which you can get in just about any pharmacy.) I would just use a teaspoon as long as you have at least a gallon of water in your reservoir. Then just wait for a couple of days and hope the plants go green again. Mine did.
https://www.rollitup.org/marijuana-plant-problems/221041-newest-growth-yellow-near-stem.html
If you are using nutrients, I would change the water right away--use bottled water only (no nutrients) and PH adjust it to 5.9 or 6.0 I would also think about adding epson salts (which you can get in just about any pharmacy.) I would just use a teaspoon as long as you have at least a gallon of water in your reservoir. Then just wait for a couple of days and hope the plants go green again. Mine did.
growinman
Well-Known Member
+rep4 ROBINBANKS!!Excellent advice and info, Sir!! I just learned a lot and you put it out there plain and simple......
And I gotta admitt, Superlevs, when I first looked at this thread and saw the pics I was wondering where the plants were--
-I thought what was there were leafs that had fallen of the plants that had been removed.....lol
I wish you much luck in getting your girls well and I am sure if you listen and learn all will be fine.The only thing I will add is I HATE ROCKWOOL!! It sucks the big donkey, imo. Holds too much water, not buffered good and then you have to dispose of it. Hydroton you can use over and over---it gets better and better with each run, imo---just rinse good the first time around. Soak it in bleach water, clearex, whatever inbetween uses......... But then many people preffer RW, so...........haha, to each his own, eh...
Oh, be patient!
Happy Growing to you!!
gmanROBINBANKS
New Member
Start small then go large, well supersize me.
ROBINBANKS
New Member
Thanks fella, we all get lost from time to time, its what we learn on the journey that matters.
Excellent advice and info, Sir!! I just learned a lot and you put it out there plain and simple......
And I gotta admitt, Superlevs, when I first looked at this thread and saw the pics I was wondering where the plants were--
The only thing I will add is I HATE ROCKWOOL!! It sucks the big donkey, imo. Holds too much water, not buffered good and then you have to dispose of it. Hydroton you can use over and over---it gets better and better with each run, imo---just rinse good the first time around. Soak it in bleach water, clearex, whatever inbetween uses......... But then many people preffer RW, so...........haha, to each his own, eh...
Oh, be patient!
Happy Growing to you!!
I have not been able to get hold of epsom salts yet - they are not the easiest thing to get hold of. Are they imperative? If so i will continue to search until i have found them. My two local chems didnt have them in stock. I am unsure if i can see an improvement yet since removing near all of the nutrient within the solution. I will be patient dont worry guys. All help is very much appreciated!
ROBINBANKS
New Member
epsom salts cleans out their system and would be pretty important in their state. you could also try for Tomato feed with seaweed extract, and foiler feed a little of that, organcic growers not just of cannabis use it all the time.
ROBINBANKS
New Member
Bio-Bizz Leaf Coat
Organic foliar spray
Leaf Coat is a ready to use product that can be applied in the vegetative and flowering stage - on soil, coco and rockwoll grown plants right up until two weeks before the end of the flowering period.
It works by forming an extremely thin elastic layer on the leaves that not only contains micro elements which the plant can absorb, but also protects against fungi, pests and diseases. Using Leaf Coat does not restrict your plant in any way and is completely permeable to light. Naturally degrades over two weeks from last application.
You can try it, but epsom salts is good for sick plants, if your plants were human they would be in Hospital -intensive care at that dude.
Leaf Coat is a ready to use product that can be applied in the vegetative and flowering stage - on soil, coco and rockwoll grown plants right up until two weeks before the end of the flowering period.
It works by forming an extremely thin elastic layer on the leaves that not only contains micro elements which the plant can absorb, but also protects against fungi, pests and diseases. Using Leaf Coat does not restrict your plant in any way and is completely permeable to light. Naturally degrades over two weeks from last application.
You can try it, but epsom salts is good for sick plants, if your plants were human they would be in Hospital -intensive care at that dude.
ROBINBANKS
New Member
Fixing them is now up to you dude.
ROBINBANKS
New Member
I,ll keep watch, nothing will happen ''soon'' just give them time, and a little mist every 4 / 5 days and id mist lights ''out'' i hope it works out, no ! it will work out, i have faith in you, and a side bet with my mate lol, no fussing with them, fussing does not speed things up, fingers crossed ok.