[member=3211]Anke[/member] Rasps are quite mad - mine even pop up in the polytunnel! We have tried weed suppressing fabric of various kinds before including black polythene, but none of them go well with terriers! Even the giant heavy duty tarp we use to cover the spare veg patch each year, rotating, has been shredded at the edges by the dogs, after mice. They are both very elderly now so the time will come when they are either too old to dig, or they are no more, so then I can use fabrics again to suppress the weeds. Thistles, couch and nettles will still come through though, depressingly.
I had a look at the link and the only thing I can see me growing and eating is the dwarf Jerusalem artichokes. I have grown the usual kind but at 8 feet tall they really don't do well up here - too windy. The dwarf ones though look worth trying, and being bright red should be easier to dig up. Quite pricey though, plus P&P on top of that, for three wee tubers. I shall think on it, and probably get some
I too looked at various sites online, including you tube, but I didn't find anything I couldn't grow as a better crop using annuals and biennials. T&M used to sell seed for 'Nine Star Perennial Broccoli' but I don't see it now and never tried it before. The other perennial brassicas look more like animal feed, except one sold by another company - I might try that too.
Thanks for the link [member=193709]nin[/member] . Can you give any recommendations for specific perennial crops that you have grown with success?