I just noticed this, what should I do? Sorry for the vague question but I can’t find any good articles on what this is.
Everything I find starts the same way “top 8 reasons for brown leaves”. Then says too much water, not enough water, too much light not enough light too much fertilizer not enough, wrong kind of fertilizer and so on and so on. That isn’t helpful! Do I just have to guess? Why is all plant knowledge basically voodoo?
I’m tempted to take a cutting so I have a spare to try again if it all goes wrong, but the plant only has 5 leaves, so I’m stressing out.
With a smaller plant you definitely do not want to remove heathy leaves. In general never remove more than 10% of the leaf area at any one time. If the newer leaves are smaller then the spot you have it is definitely too dark.
And to answer your original question, “Why is plant knowledge voodoo?”.
There literally hundreds of thousands of plant species. Each of those species is adapted to different environmental conditions. The requirements the species need are further modified by its interactions with micro-orgsnisms. So the answer to most questions about growing them requires an significant depth of theoretical and practical knowledge on the subject.
A large portion of humans quickly revert to mythology when any topic becomes slightly complicated.