Stems turning dark after topping

[Kundal1n1]

Hi there. I have topped one of my plants earlier this week and about a day after or so I noticed the stems below where I topped them have turned a dark color, a dark purple even. Now I topped two plants and only one of them showed signs like this. The other ones stems are just green. Any idea as to what this darkening after topping might be related to? Thanks!

 

[Lester Freeman]

It did not occur because of the topping, it probably began to happen at a coincidental time. Some people think that purple stems indicates a deficiency, however this is really not always the case. Purple pigmentation in stems can be the normal genetic expression of certain phenotypes.

You shouldn't have anything to worry about