The Senate Department for Urban Development and the Environment and the State Commissioner for Nature Conservation and Landscape Management have written about the origins of native plants at www.agrar.hu-berlin.de: “Berlin is a green city. Its parks and gardens are home to many ornamental plants and crops which were originally imported from all over the world. In addition, around 1,400 wild plant species have also been found in the city. Over 10,000 of these are native, meaning that they mostly occurred naturally thousands of years ago, in landscapes not subject to human influence. Around 300 species originate from other parts of the world and have now become successfully established in Berlin.” (…) “Non-native”/“alien” are the terms used to describe native plants whose seeds come from more distant regions. In contrast, “native” plants come from colonies that have reproduced in a particular natural area over a very long period of time.” All the seeds we use are classified by nature conservation and landscape management associations as wild plants native to Berlin.