Why some of the leaves are getting brown on edges. What should i do with them. Should i remove them or just keep them as it is.
What’s your feeding schedule look like?
Nutrient Burn is a problem that almost every marijuana grower has encountered. It occurs when plants develop leaves that look burnt when receiving excess nutrients. Don’t be afraid, because there is a way to avoid this marijuana problem and not have to go through this bad experience.
We are going to explain what nutrient burning consists of , what factors can trigger it and how to prevent its appearance. If your plants already have symptoms of Nutrient Burn.
As we have said, nutrient burning occurs due to an excess of nutrients. Unlike animals, plants do not gain weight when they receive more nutrients. Your body’s needs are much more balanced and measured. This is why a change in the plant’s nutritional cycle can kill it. The same when we overwater it. It is very important to avoid Nutrient Burn to have special control of the pH of the soil and its EC .
The first reason that produces the burning of nutrients in marijuana is to use a non-recommended mixture of fertilizers , which is very strong for the plant and which it is incapable of assimilating. For example, apply a fertilizer from a flowering phase during the vegetative growth phase.
As we indicated, when we overwater the plant we are also providing a greater contribution than it needs . This means that marijuana cannot function properly and what’s more, it has difficulty accessing oxygen.
If you use boost or enhancers during flowering , do so following the instructions. Many times these products are very concentrated and with a very small amount you will have more than enough to give it the extra nutrients that Cannabis needs but without burning it.
The same goes for growth enhancers , you have to be cautious . If we use them too much we can interrupt the growth of the plant, that is, the opposite effect. It is also a factor that causes nutrient burning to appear in marijuana.
Prevention is better than cure. If we take a series of basic measures to prevent the burning of nutrients, this will become a simple habit that will hardly cost us any effort to do. First of all, it is important to use the appropriate fertilizer for each stage of growth.
Another prevention measure is to use the amount of fertilizer recommended by the manufacturer. What’s more, if there is a minimum amount and a maximum amount, it is best to always use the minimum amount to ensure that you do not exceed the nutrients.
It may seem obvious, but never use marijuana products and fertilizers by eye. Use dispensers in which you can measure the appropriate amount of fertilizer. That is, avoid human error as much as possible. Organic substrates and fertilizers also promote good nutrient absorption . Thus, these soils allow beneficial microorganisms to settle that strengthen the root system of the plants. The plant absorbs most of its nutrients through its roots, so if we keep them strong, they will be more resistant to overfertilization. The symptoms of Nutrient Burn are typical of excess nutrients. For example, nitrogen, which is one of the macronutrients most present in mineral fertilizers. One of the most common symptoms of nutrient burn is yellowing and burning of the leaves. This will spread throughout the plant if overfertilization is not stopped.
That some very young shoots of the plant present burns is nothing strange, but if you notice that the more mature leaves also present this problem, start taking measures. But as you can imagine, reducing the amount of fertilizer you use is the first step.
Sometimes, if the excess nutrients are slight, you may not notice it soon. Instead, it will begin to appear gradually , but it will be just as dangerous. In the same way, if you have applied a lot of fertilizer in a short time, Nutrient Burn may appear in a very few days.
I have minor nuet burn on every grow I’ve done. Usually just the tips and it’s a way of your plant saying I’m at my max usage and don’t need anymore. You look a little strong , might need to reduce your nuets a little…
What nuets are you using , how much? This will help to.
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I can’t thank you enough for taking your precious time to reply me. Thank you so much for the info. Perhaps, right now very few leaves are having little brown spots, i wonder why. Please have a look if you don’t mind and tell me exactly what should i do. Again thank you so so much for your reply. Please have a look and let me know what you think. Thanks in advance. By the way you were absolutely correct about giving flowering phase nutrients in vegetative stage. I won’t do that in future now. But my plant is in now flowering stage. Kindly have a look at some of the pictures below.
In the last picture as you can see there are small yellow ish brown spots. I wonder why?
Thank you so much in advance.
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Look, I can safely tell you that every problem that the plant has, the majority always start with a poor measurement of the pH of the water, it is best that you buy a drop meter and a product called PH down -
There are organics and acids to lower the pH of the water. The PH level where the plants usually do not have problems and take all the nutrition without problems is 6.0 outdoors from when it grows until it is harvested and indoors, if you use HPS Sodium lights it is 5.5, if you grow with LED Light it is Between 5.8 and 6.0 around this level your plants should have no problems. I advise you when the water runs through the plants, first put the fertilizers and then measure it and if you have to lower it, lower the pH. Always water WHEN the plants need it, don’t overdo it with watering, I always put a finger in the soil and if it is wet, I water the next day or 2 days.
the fertilizers, the growth until the plant is put for 12/12 hours and you let it flower, you can add it without problem. You have to add the flowering fertilizer when the plant begins to grow hair on the tips of the leaves, then you have to change the diet and give it the flowering fertilizer and remove the growth fertilizer.
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I always check the ph value of my nutrient mixed water before feeding it to my plants, 99.9% its always more than 6.0 but then i add ph down to bring it down till between 5.5 to 6.0. Moreover, i wanna ask is it ok to foliar feed the nutrients to plants, also i am using npk 0.52.34 right now as it’s been couple of weeks since I have shifted the light cycle to 12/12, is the npk ok? Or what should be the best npk to use right now. I have another fertilizer npk 0.0.50, which i am waiting till the end to use. Can you guide me the perfect npk to use right now. Also should i cut the leaves that have brown spots in them or should i just keep them as it is.
Well, if you use a foliar fertilizer, you still have to put it in water with a pH of 6.0, because if you add it with glyph water with a pH higher than 6, the leaves do not feed on that, the same happens when you fumigate with neem oil and potassium soap. The water in which you dilute the fertilizer or Phytosanitary product must have the same pH at 6 as the water you add to water it. perhaps it could have contributed to the brown spots as a magnifying glass effect. Well, since bud fattening and the end of flowering, they have enough P and K, so I would suggest starting with minimum doses like 0.5 ml x L of bud fattening until you reach more or less 1ml x L when you already have them between the end of flowering. 5 week and the beginning of the 6th week and the end which has only Potassium so give it only 0.5ml in final flora and with those doses you should not give it overfertilization. The best thing is to look for a nutrient table of the fertilizers you use and the doses indicated in the table. Always give half of what they say and you will never go wrong!
The leaves can be removed later in the flowering period, I advise you to cut off only the burnt tips and that’s it. When they are well into flowering you can remove it.
good fumes!
Thanks alot. Just a couple of questions if you don’t mind me answering i. E over here water is 7.0, therefore should i lower the ph value to 6.0 before adding the nutrients to water or its ok with lowering the ph value AFTER mixing the water with nutrients. Thats what i have been doing, i mix the water and nutrients all together dosage wise and then i bring down the ph value between 5.5 to 6.0. Another thing I wanna ask is, i have been feeding the dosage of “transition to bloom” for couple of weeks now i. E when i changed the light cycle 12/12. Now when can i start feeding the dosage of “blooming and ripening”, please view the image below as you will understand the dosage etc
Thank you so much for giving me knowledge of starting feeding little bit of potassium fertilizer with low level. I have a very good potassium fertilizer or nutrient that i am going to start feeding from today 0.5 ml per litre. And will update you the results. Thanks so much once again
I just wanted to show you something else as well. Please have a look at leaves
Should i remove these leaves.
I have sent photos with and without camera flash. Kindly have a look. Thanks
Make sure your camera lense is clean. The photos aren’t very clear. Yes the damaged leaves will not recover and should be trimmed. Happy growing
I advise you before putting the fertilizers in the water and then you measure the pH, because there are fertilizers that are stabilizers or lower the pH of the water and if you, before adding the fertilizers, lower the pH of the water and the fertilizer you add. tends to lower it, it will always drop below the level you have to leave it at. That’s why you put the fertilizers first and then measure the pH.
At the moment it is better that you only add the flowering fertilizer, and when the plant will have 4 weeks of flowering, you can add the maturation fertilizers.
Now from what I see it seems to be in the 2nd week of flowering. Do you know what the genetics of your plant are? because I notice it tends towards Sativa and a Sativa indoors can take 12 weeks of flowering and under a 600w hps sodium bulb to finish.
You could try doing a monstercropping or an LST by lowering the highest branches, so that you can bring the LED closer to it so that all the branches receive light evenly and then more watts of power could speed up the flowering of your plant a little.
good fumes!
Leave the leaves on, then when the flowers begin to mature, forming the first buds, you will remove them and that’s it.
Teachers always hated me in school.
Your leaves are damaged and have no benefit to your plant.
It’s wasting energy trying to repair them.
If PH is giving you a problem get rid of that stress and use advanced Nutrients. Their PH perfect formula works.
But with the way your leaves are sagging…to much water.
@Vick …could you post a couple pics without the flash on? It makes it difficult to see clearly , looks like white spots which could be a type of mold.
I am growing in coco. Thanks for your reply.