If garden pots had a pecking order, designer garden pots would be at the top and the humble black plastic ones would be at the bottom. As far as being eco-friendly is concerned, designer pots have it covered, while at the bottom of the list, not much can be said for black plastic except that it is re-usable to a certain extent. That is, it can be repainted and decorated to look much more attractive and to help it last longer.
However, when it comes to designer pots, plastic is not involved as such pots are made from more durable materials such as glazed terracotta which is baked clay, fibreglass and other materials. Some are made from concrete, which is really too heavy, especially if the pot is to go on a balcony or has to be moved around much.