I used to have this twentyone years old postcard from some park north of S.F., it contained a small disc of compressed soil, some seeds and instructions, but cannot find it now. I had once (1993) used another one I bought on the same occasion, and if I remember well it said to soak the soil in water and put a seed or two in it, then put the whole thing in a covered dish and in a fridge for a month. It germinated, and then the second seed germinated and killed the first seedling... Well, this second plant grew until 2005 in a large vase in my garden in England. It was eventually transplanted, and for a year it grew in open soil, gaining a metre or so in that timeframe. Finally in the summer of 2006 I dug it up as the land was undergoing development and gave it to a friend who had a clearing to fill, but he left it too long out in the air, and I wasn't there to check, and it died... It still makes me sad.
If I can find that postcard... I think I'll try again, even if it's 20 years.
