Bought one seed of worsleya procera on ebay. And lucky me it germinated. Now after 4 weeks it looks like https://dropbox.com/sh/3uc9f57w700bxlk/… Based on an article I read on the internet it was sown in pure pumice. It is my first attempt to use pumice only instead of a more traditional potting mix. My question is how to fertilize it. Should it be diluted, regular or extra concentrated, because if I water the pumice most of the water will fall through. And should the interval of fertilizing be the same, less, or more often than when potting in a regular potting mix. Aad, Groningen, Holland