The mentioned disadvantages relating to a Vorzucht the plants in the house. I have not tested with pure outdoor use.
Disadvantages:
The smell: The growing pots smell very strict. They smell of compost, which is why they are simply unsuitable for Vorzucht in the apartment. Worse still is the smell when they are wet.
The mold: As mentioned several times in the reviews, they get moldy in moisture very easily.
Water withdrawal: The pots escape the earth their moisture ... and then begin to go moldy, since they are damp. I have a lot more often than normal watering pots.