Where can I find Potting soil and fertilizer in Helgoland?

Potting soil and fertilizer can also be found in these cities:

Bochum Castrop-Rauxel Datteln Dortmund Hagen Hattingen Herne Iserlohn Lünen Recklinghausen Schwerte Unna Waltrop Werne Witten

You can also find this in Helgoland:

Cut Flowers Plants Flowers Vases Houseplants Fertilizer Arrangements Coffee Machines Occupational Safety Balcony Box Holder