Please can you explain 种着 in this sentence
Please can you explain 种着 in this sentence.
四合院里经常种着石榴,桃树和枣树。
I understand what it means as a whole, but I'm unsure about the usage of 种着 and how best to translate it other than saying, In the courtyards there are Pomegranate, peach and date trees.
Thank you.