Thanx a lot for the tips Ingrid! Think I will mix sand plus earth and give it a try. Any suggestions for the kind of sand to use? Keep your fingers crossed for me. And you are welcome for a cup of coffee when over in Holland (I have been in Sweden five times...) Mimy ps - am still hoping for more tips (think more can benefit), especially to my questions re. the other seeds. Hope to hear from you all.