One of the first things you should do is check if you’re dosing your nutrients properly. Before anything else, make sure you’re using the right quantities and the right combination of nutrients. This is more common with salt-based fertilizers as salt tends to build up, changing your medium’s pH. This is why adding more nutrients when you’ve identified a lockout in your plant won’t help.
This health issue will make plants look and feel weak. Growth will appear to be stagnated. You’ll be seeing yellowing in the leaves.
Only you will be able to fully assess what works best for your plants. We just hope this article can help you stay calm in a nutrient lockout situation, because it’s not irreversible.
If you’ve checked that your nutrient mixture is perfect, the next step is verifying that your pH is also on point. For this, you’ll have to flush your plant’s medium. Take the extra effort to dial down your grow room humidity to 49% on the day you flush. Flushing overwaters the root zone, which can harm the roots. Do this for one lights-on and one lights-off cycle.
Now that you’re more informed, test out these recommendations for yourself. You’ll certainly find that some work better, or are at least easier to execute than others.
Left untreated, this yellow will turn brown and the leaves will curl up, looking burnt.
Does your plant look limp and fragile? Are the leaves changing colour? This might not be a lack of nutrients, but the improper uptake of them. Read on so you’ll understand how to treat and prevent nutrient lockout.
When you face a problem with your cannabis plant, it’s always important to learn from the experience. Whether you’re able to solve it or not, knowing how to prevent a lockout in a future scenario is what distinguishes the men from the boy growers.
Overfeeding, pH variations, or other stressful factors affecting the plant’s root zone may be the reason.
If not treated in time, this problem could turn into something worse that might kill your plant. Be sure you know how to identify and treat nutrient lockout.
The amount of light also plays a role in how much nutrients your plants need. This can be important when you switch your plants from the vegetative phase into flowering. Only change the amount of light and nutrients gradually and slowly to allow the plants to adapt to their new environment and to reduce stress.
When your cannabis plants are experiencing a nutrient lockout, this means that they cannot take in the required nutrients to grow properly. The result of a nutrient lockout can be growing deficiencies such as discoloured leaves, poor yield and in the worst case scenario a lost grow altogether.
A nutrient lockout is among the most common problems cannabis growers can experience during a grow. Unfortunately, less experienced growers will not always recognize a nutrient lockout as what it really is. Many times, the grower might even do the exact opposite of what would be needed to fix the problem. In this blog, you will learn what nutrient lockout is and most importantly, how to fix it and how you can avoid it in the future.
Organic nutrients can help to avoid nutrient lockout. Non-organic nutrients and fertilizers contain minerals, including salt that will build up over time, changing your growing medium’s pH levels and therefore possibly leading to nutrient lockout. Organic fertilizers don’t contain those high amounts of salt which means they are far less likely to cause nutrient lockouts. However, even with organic fertilizers, routine flushes are always a good practice.
A nutrient lockout can be caused by a variety of things. Common reasons for your plants not being able to take in all the required nutrients could be wrong pH levels for your water, nutrient solution or soil (such as when the pH is too high or too low) or a chemical reaction between nutrients that can cause your plants to not uptake nutrients. Build-up of salt deposits in your soil from the use of mineral (non-organic) fertilizers and nutrients can also be a cause for a nutrient lockout.
To fix a nutrient lockout and restore your plant’s ability to absorb nutrients you can perform a nutrient flush. This means you cleanse the growing medium by saturating it with clean water or with water and a special flushing agent. If you grow in soil, the common flushing procedure is to give as much clean and properly pH-ed water until half of the water comes out. Following the flush, it is recommended to give your plants the correct amount of nutrients. For hydroponically systems, the methods vary, but the underlying principle is the same: you cleanse your system to get rid of salt and mineral build-up, which is the actual reason for the lockout.
Many new growers see the symptoms of a nutrient lockout such as yellow leaves or overall poor growth and they think that the problem is not giving the plant sufficient nutrients. This thinking is of course not even that far off since the signs of a lockout can indeed look similar as if the plant would not get those nutrients in the first place, except for the underlying cause.
Also very common are nutrient lockout problems caused by an altogether incorrect pH level of your water or nutrient solution. Cannabis prefers pH levels that range from 5.5-6.5. If this is significantly off beyond this scale either way, a nutrient lockout and growing problems are likely. To solve this problem you need to always make sure about the correct pH levels of your water or nutrient solution. To start fixing your plants, perform the flush as described above with water that has the proper pH. Water with water that has the correct pH level and the problems from the lockout caused by improper pH should go away in a few days.
However, rather than fixing the actual problem, such as a wrong pH, salt build-up or whatever the reason for the nutrient lockout may be, growers may be tempted to give even more nutrients, thinking this would solve the problem, essentially making the problem even worse!
Cannabis nutrient lockout: Learn how to fix nutrient lockout and how to avoid it.