I realize: in the second year after seeding my friend chard is starting to grow really strong.
Mid mai I will get the new bed behind the house, then he will get more space than in this pot and I am looking forward to a pretty well season.
May be then I should seed some more, in order to harvest next year too, since I read that chard is only growing for 2 years? I shall see if he dies or grows again. Learning by my own experience 🙂 that I trust most so far.