Is this also an autoflower? if so, if you have good soil, it doesnt need that much nutrients in the first weeks.
Be carefull with giving nutrients, to make sure you don't mess it up without measure tools, you should give them only water from time to time.
If you can buy pots, always buy pots for autoflowers because most autoflowers will get like 50-80cm, there are kinds that get 1.10-1.30cm.
Most of the growers only put it in the ground if they want big plants that can get big.