Phosphorus is the “P” in your N/P/K Ratio. Like Nitrogen and Potassium, it is known as a “Macro nutrient”, and is one of the three main elements needed in plant growth.
Once the medium is dry, continue to water your plants, with just water! They will eat the Phosphorus that is stored in their plant matter. Your plant will lighten up within a few days, to a week, depending on how bad the toxicity is.
It will be harder to remove any element in soils than it would be in hydro or coco, as the drainage isn’t so good and you can risk over watering your plants. It is best to do one big flush, to remove as much as possible from the medium. After the flush, let the soil dry out until the pot is light before watering again.
Phosphorus Excess can be a difficult problem to diagnose. This is is because too much phosphorus will cause other nutrients to be “locked out”. You will see signs of cal/ Mag deficiency, because the plant can not absorb those nutrients. This will also affect plant growth, and will cause many issues, that will progressively get worse.
Because flowers are also built out of Phosphorus, you will find bloom foods, and P/K boosters will be high in phosphorus.
If you think your plant is suffering from Phosphorus Excess, then feel free to ask for help in our cannabis growers forum
If you don’t have an EC meter, and you’re growing in hydro or coco, you will need one! If you would like to know what your plant is eating, you need a good reliable EC meter.
Flushing your medium, with plain, PH’d water, is a good way to reduce the amount of any nutrient in your medium.
Once you have flushed, or removed your old reservoir, feed your plants again, at half of their usual EC. This will lighten them up, to a healthier shade of green, within a few days. But any damaged or burnt leaves will not fully recover.
Phosphorus Excess can be a difficult problem to diagnose. To make sure you're getting an accurate diagnosis, join the grow room, and ask for help!
In this post we will focus on the macro and micro-nutrients necessary for the development of cannabis plants. These elements are available in the nutrients, so the chosen type of fertiliser and its correct use will lead us to a crop without deficiencies or excesses, thanks to a properly planned and balanced feeding.
It’s inevitable that at some point, almost all cannabis cultivators will find themselves in the position of needing to apply a foliar spray of one kind or another to their plants. There are many potential reasons for this: you could be in need of a fungicide or an insecticide; or maybe you want to fertilise, correct a nutrient deficiency or just give lacklustre plants a bit of a boost.
Deficiencies are often – although not as a general rule – a lack or inadequate supply of some nutritional element in a precise moment of the plant’s life.
Whatever the motive for spraying, we think it’s worth doing the job properly, and there are some basic measures we should take every time to make sure we get the best possible results and avoid damaging our plants. We?ll deal with these ten fundamental points first, then go on to talk in a bit more depth about foliar application afterwards.
There are different factors to take into account, so we’ll try to explain them in a simple way so that all growers can dispel all the possible doubts which may arise relating to the nutrition of their cannabis plants.
To avoid deficiencies plants must be fed with a complete fertiliser, specially designed for cannabis farming. PH level must be controlled, stabilised and adjusted depending on the type of crop, either in hydroponic or soil crops, and for both potted and in-ground plants.
What is an excess?
What is a deficiency?
Excesses of nutrients are salt accumulations in the metabolism of the plants in a particular stage of their life. To avoid excesses when growing cannabis, we will have to use constant and balanced feeding adapted to each type of culture, substrate and genetics. Each phenotype has its own needs, and to know them ensures best results and avoids nutritional issues.
Cannabis plants can suffer various deficiencies, excesses and nutrient lockouts throughout their cultivation, both indoors and outdoors. They requi