Phosphorus Excess

Phosphorus Excess

January 30, 2019 0 By percysgrowroom

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.

Phosphorus is like a power line, connecting all of your plants cells together. The energy created by the plant via photosynthesis, is transported around the plant using phosphorus. It is also a major element in flower, and root growth.

What is Photosynthesis

Because flowers are also built out of Phosphorus, you will find bloom foods, and P/K boosters will be high in phosphorus.

The Effects of Phosphorus Excess.

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.

What Phosphorus Excess Looks like

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How to Fix Phosphorus Excess

How to fix a phosphorus excess will depend on the medium you are growing in. It can be as simple as flushing you medium, or, if growing outdoors, you may have to plant crops that will eat a a lot of phosphorus. This will make sure whatever is in your soil will be eaten faster.

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Phosphorus Excess in Coco & Hydro

Flushing your medium, with plain, PH’d water, is a good way to reduce the amount of any nutrient in your medium.

How to flush 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.

What is EC?

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.

Buy EC Meter Here:

Phosphorus Excess in Soils

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.

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.

Thanks for reading! You can find more information on anything related to growing in our cannabis grow guides. All of our guides are written by experienced growers, and members of our cannabis growers forum. If you have any questions, sign up. It is free, and we are always happy to help!