Growing quickly

The leaves are growing bigger every day, and all four roots that were planted have now sprouted.  I have realised I have no idea how big Horseradish plants grow to.  I may have seriously erred on this, as if they grow big they will undoubtedly put a lot of my rows of plants into shade.  One of the horseradish plants is already growing up through the row of radishes

Horseradish leaves

I'm probably getting ahead of myself, but assuming I get a decent crop of horseradish I need to start thinking about what to do with it. I want to make lots and lots of horseradish sauce with it, but it's got to keep well in jars.  I need to look for some decent recipes I think.