sehr unterschiedliches Wachstum

Small height differences are quite normal for plants from seeds. Usually, the stretch settles down after 2-3 weeks of flowering. The smaller ladies also need a bit less water. If you water both with the same amount of water, check the pot weight before the next watering. The ladies in my garden that are a bit smaller than the others usually don't drink as much either. I lift the pots slightly to see how heavy they are. You can definitely water the big plant every 2-3 days with 10% of the pot volume. The smaller one, depending on how much it drinks and how heavy the pot is before watering, with the same amount or a bit less.