Over / under fertilisation of cannabis plants

Cannabis plants can quickly become under- or even over-fertilised.

Whether organic or artificial fertiliser, it always depends on the right amount. As a rule of thumb, you should use a little less than recommended by the manufacturer. If problems arise during cultivation, increase the amount slowly and see if the problems are really solved by applying more fertiliser. In case of overfertilisation, rinse with pure water for a few days.

The following table contains the most common symptoms and reasons for this:

[click on the picture to enlarge]

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