Looking awesome Bernd!!!! Its great to hear you got some ground planting space in Thessaloniki too and even better to already see your first banana in the ground there! Congratulations!!!
You may want to mulch heavilly under the banana to conserve moisture and provide nutrients as the mulch breaks down. This will help make watering less often and keep the banana at a consistent moisture level and even healthier!
Looking forward to see pictures of more ground planted!