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Nutrient Burn In Marijuana Plants

Nutrient Burn In Marijuana Plants

It is unnecessary to give your plants an overabundance of nutrients for their health. Keeping it light is the best way to go for optimum growth. Nutrient burn is one of the most frequent issues newbie growers have, which happens when the plant’s roots absorb an excessive amount of bottled nutrients.

Read this article and learn how to identify and prevent a nutrient burn in your marijuana plants

What is nutrient burn

Cannabis nutrient burn

Nutrient burn is also known as cannabis “Nute Burn”. This occurs when seedlings or plants are grown right in soil that already has a lot of nutrients. Nutrient burn causes your leaves to lose necessary meat that it needs.

This overabundance of nutrients leads to yellow or brown burnt tips on the leaves. The amount of nutrients must be reduced, or else the problem spreads from the burnt tips inward causing the leaves to become crunchy and curled. For example, if there is too much potassium, nutrient burn will show up as brown spots near the edges of the leaf. When there is excessive nitrogen, the leaves will tilt/curl downward.

Download my free marijuana grow guide at this link for more on nutrient problems

If all you have is a little bit of nute burn than that is not much of an issue, however, if it is not properly treated this will seriously reduce plant growth and yields. Another thing is, this could lead to your marijuana having a bad chemical taste that you don’t want. It doesn’t matter what kind of nutrient burn your plant has, the steps to resolve it are the same.

How to fix nutrient burn

How to fix cannabis nutrient burn

Bottled Nutrients – Usually you have nute burn because you are putting too many additional nutrients in the water. Always use nutrients that were made for cannabis plants. Remember, if it is good for tomato plants than it works for marijuana.

Be sure you are using the proper nutrients for the particular growth period your plant is in. There are different requirements for the vegetative and flowering cycles. By not following this appropriately, you could potentially be putting your plant in danger.

Coco Coir and Soil Systems – When growing your marijuana in hand-watered systems, flush it with pure, pH’ed water at any time you see the first sign of nutrient burn. Now, if you haven’t given your plant additional nutrients, then just give the plant time to use the extra nutrients in the soil. Once it does this, your plant will automatically recover from nutrient burn. While older leaves will not recuperate, no new cases of this will occur.

Hydro System – One way to cut down on the nutrients in your water is to add pure, pH’ed water to thin out the nutrients. You can also try mixing a new batch with fewer nutrients in it.

Download my free marijuana grow guide at this link for more on how to solve nutrient problems

Always make these changes slowly with hydro systems. With this system replacing the water and reducing the nutrients accordingly, will result in instant positive changes. The nutrient burn expansion should cease.

The tricky thing about hydro is that certain strains work fine with a different level of nutrients. Even if you give your plants the same quantity of nutrients, one may still get nute burn and the other may have a different level of deficiency. The plants take in nutrients differently.

Also, keep in mind that your plants will consume a certain amount of water based on the humidity and temperature in your grow space. To make things much easier for you when growing in hydro, use a tool called TDS meter to assist with manage the nutrients in the water. It will literally let you know the amount of nutrients in the water and make you aware of whether the levels are going up or down every time you look at it.

Nutrients during flowering stage

Nutrients during flowering stage

Flowering is the second phase of a plant’s life when they start producing buds. Marijuana plants are far more susceptible in the flowering state because they are unable to recuperate from any damage. Basically, the closer it is to harvest time, the lower the chances are that the plant will recover since it is putting all its energy towards making buds.

So, your marijuana plants require more tender loving care when it is in the flowering state. Don’t let the nutrient burn get out of control.

Marijuana plant symptoms

- Brown spots
- Top/lower leaves or new/old growth is damaged
- Edges of the leaves are burnt or brown
- Leaf tips look burnt
- Plant growth is slower
- Leaves are curled under

Don’t fall victim to the false information out there that says burnt leaves is a sign your plants are getting plenty of nutrients, or the belief that more is better when it comes to nutrients. This is all wrong and could lead to some serious problems. In fact, a good balance of nutrients is always better than overdoing it. At the first sign of nute burn take the necessary precautions to bring your plant back to optimum health.

Remember that plants with strong genetics have less change of getting sick and are less vulnerable for diseases, deficiency’s, pest and environmental stresses. So make sure to buy marijuana seeds from a trusted seed bank.

Thanks for reading. Please leave comments or questions below and don’t forget to download my free grow bible


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Comment Section

38 thoughts on “Nutrient Burn In Marijuana Plants

By pamela molyneaux on 5 August 2015

my husband bought some white widow feminized seeds from you. this is are first grow ever we have planted one seed it was doing well for about 10 days now she has one of her seed leaves dieing and one of her first true leaves has had some yellowing at the tip.we havent firtilzed her yet she is about 3 inches tall havent tranceplanted her because her roots arent showing yet .she is mainly a indoor plant but we ley her outside for a couple hours twice a week. it has been about 90 degrees ferinhight .she is in mirical grow poting soil has a 15 watt led grow light and a 25 watt led regular energy efficiant bulb that says it replaces a 60 watt bulb to suplimint the grow light. the grow tent is a small tent a little over 5ft tall and 3 ft wide bace the grow ligh is 2.5 inches from the curling of the main leaves. please help us to make sure she is healthy.i need her to do well for migraine control and musle twitches and i am hoping it will help to slow or reverse a precancerous growth that i have

By MrNiceGuy on 28 June 2016

Not enough light. You need at least a 600w HPS light for a 4x4 Grow Tent. Or a 400w HPS for a 3x3 tent. Remember to ventilate heat. You can put about 4-6 plants under in tent 3 gallon pots (roots organics soil) and get 1-2oz each plant. For the cancer I suggest trying Rick Simpson Oil. You can find out how to make it on "" (remove quotes) You need about 1 lb of material to make enough 60ML of oil to start treating cancer. You need to ingest at least 1ml of day. Most take suppositories its easier and less pshycoactive. GL

By MrNiceGuy on 28 June 2016

@ Pamela,
Not enough light. You need at least a 600w HPS light for a 4x4 Grow Tent. Or a 400w HPS for a 3x3 tent. Remember to ventilate heat. You can put about 4-6 plants under in tent 3 gallon pots (roots organics soil) and get 1-2oz each plant. For the cancer I suggest trying Rick Simpson Oil. You can find out how to make it on "" (remove quotes) You need about 1 lb of material to make enough 60ML of oil to start treating cancer. You need to ingest at least 1ml of day. Most take suppositories its easier and less pshycoactive. GL

By Nick on 26 August 2016

Miracle gro is probably killing it. Almost lost my plants to it. Switch to Fox farm ocean Forrest

By Trent on 17 December 2016

Don't plant seedlings in a nutrient rich soil. Seeds have what they need to grow for the first 2 weeks. Use a sterile growing medium. After 2 weeks plant into a nutrient fortified soil(preferably not miracle grow) then start feeding it nutrients a month later. Most likely, you burned your roots and stunted the plants growth. I would also recommend buying a higher powered LED. I hope this helps.

By latewood on 8 August 2015

It sounds like you're over watering. However; Young seedlings should not be in soil with fertilizer at such a young age. I strongly advise you all to join our support forum and get assistance with your grow. 🙂

By A A M on 5 September 2018

I transplanted on september 03 still waiting for the 2nd node.

By Honorine on 27 August 2015

I have got one suggestion for your web site. It areapps like there are a few cascading stylesheet troubles when launching a selection of web pages within google chrome as well as safari. It is functioning okay in internet explorer. Possibly you can double check that.VA:F [1.9.17_1161]please wait...

By Jennifer ILGM on 5 October 2015

Hi Nebula, thanks for letting us know, the picture was mailed by a fan/customer. I will leave your link up!

By Gary Despots on 3 October 2015

Thanks Mr Bergman for all the tips.
I look forward to them. I got strawberry kush seeds from you awhile ago. I will be germination soon they arrived just fine. waiting for my 48×48 grow tent. So I can flower and veg in the same room.
Never realized the science behind this. I love it.

By Gary Despots on 3 October 2015

Looking for any tips on germination. I hear Rockwood cubes are good. First time starting from seeds.

By latewood on 5 October 2015

Gary Despots,

Rockwool is a great product. I suggest you join our support forum. You will get faster support in the forum than you will here in the Blog.

To use Rockwool. Soak in water for 5-10 minutes. (PH is optional). Some growers like to soak in PH adjusted water. After soaking, do a good shake to get rid of extra water. Place seed in cube, and leave in the dark for 2-3 days. A warm area is best.

By Frank Cassianna on 11 July 2018

Jiffy plugs, work best...

By Gary D on 3 October 2015

I am using 1 400watt hps for flowering 2 plants. It is a air cool hood.when I set up my grow tent with carbon filter. Should I connect it to run through the light. I have a 6in inline fan sucking the hot air out a window.
Or should I use the blower to draw more fresh air in, and leave the inline fan to pull heat out of the light

By Alex on 4 October 2015

I have a Reggie seed I planted and it spurd out but the two leaves are out but not al the way out. It's been maybe 3 weeks since it came out but the leaves seem like the yellow and won't grow since then. What should I do? Is it that normal?

By latewood on 5 October 2015


You need to join our Support Forum. There you can add a picture, and we can give you a more informed answer anmd guidance from there. 🙂

By latewood on 5 October 2015

Gary D

If you have an inline fan; You should use it to pull heat through the carbon filter, through the light, and output hot filtered air out of room. You can add a fan to draw air, but I believe a passive intake in the tent will be just fine.
For continued support; Join our grow Support forum.

By deb on 7 January 2016

Out or 18 seeds only 8 are thriving. The others are dead or barely hanging on. Do you replace/refund failed seeds? tks deb

By Jennifer ILGM on 8 January 2016

Hi Deb, sorry to hear not all of them made it, please contact our customer service At [email protected] they will take it from there.

By Pat on 11 August 2016

Thank you for the info I new it wade thrips or nut berne! Yep. ...

By ace on 15 November 2016

i had a problem with spider mites sprayed with organic killer know leaves are curling and under leaves there looks like little pieces off wood clinging to the veins of the leaf anybody help me please

By latewood.ILGM on 16 November 2016


You need to join our support forum. We can help you there. This blog article is on nutrient toxicity but, at the forum, we have an area where we can help you out. See you there, lw

By mattc on 5 April 2017

i have a bit of nute burn. i was going to flush the soil with some water as suggested here, however, do i need to be concerned with over watering the plants? They're about 6 weeks old grown from seed?

By marty friedman on 14 July 2017

Hi Robert, love all the information I receive. *edit*

By Roy ILGM on 16 July 2017

Thanks Marty. For your customer service related questions, please leave a message here

By Larry Green on 24 July 2017

Great article. I am building a new site dedicated to growing. It is called Feel free to check it out or if you ever want to collaborate that would be awesome! Love your site by the way MMJ for ever!!

By sicilianpie on 24 July 2017

who knew that growing 'weed' would be so complicated. The other weeds in my garden do not have any problems.

By Roy ILGM on 25 July 2017

Haha, touché. The growing part is actually the easy part. The art is in optimizing 😀

By dan on 18 August 2017

If you want to get just a few seeds from your plant heres a little trick I learned.
Let a branch of one of the males grow. I keep it way away from the females. Then when it starts to pollenate I put some of it in a baggie, then I take the baggie wrap it around one branch with a rubber band blocking it from the rest. Leave it on for a few hours should be enough as the plastic can burn your plant. Just keep a close eye on it.

By Terry on 21 December 2017

Hi everyone this is my 1st grow i have 2 chocolate chunk comin up to week 7 of flower under 3oo watt led roleado full spectrum got abit of brown tips lookin frosty and nice smell and sticky plenty of buds just there not very big wot can i do or is it too late better luck next time

By Andrea W on 28 July 2018

Hydro grow super lemon haze took a long time to grow and it was doing great moved it into bigger tent 3x3 300w led was doing ok for a week or two water water fed very little nutrient organic fox farm grow big only gave 1 dropper 1ml) at a time. The tips turned yellow and some curled up and got crispy check pH everyday always between 5.5 and 6.5. Humidity about 50 temp range from 70to 85.i flushed and added a little more mutes still tips turning bright yellow even new growth. I just flushed with just pH water no nutes to see if it helps. I can't figure it out. I read and read and what I could find is nute def but not sure. I did have a couple of older small leaves turn yellow but pretty much just the tops. Please help.

By Andrea W on 28 July 2018

Sorry it's just the tips that turn yellow and some get crispy. I want to turn to flower but waiting to fix issue first it's getting taller. Need to change over soon.

By Andrea W on 28 July 2018

Water temp 75. 229 ppm and 487 conductivity. On 3 in 1 meter

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