Highlights.

As someone who grows with my own recipe of "super soil" for more years than I can remember (35+), it is highly unlikely your plants won't need feeding at some stage, especially during flowering. While it may seem ideal to just leave the plants to their own devices, the reality is that in order to provide enough nutrients for three months of feeding, the soil mix would have to be extremely rich to begin with, however the chances of burning seedlings is very real when using extremely potent soil mixes. Outdoors in the ground directly it may be possible to do so, but with container growing, it just doesn't work. These days I can make a soil mix that is potent enough that it does not burn seedlings and will last (almost/generally) the entire veg cycle, but by the second or third week of flowering, there is no alternative but fertilizing to get them through, unless you are not interestrd in quality flowers! I have found "minimal feeding" easily achievable, but no feeding.....impossible.