So, Paekakariki growers, I come to you for ideas... what are your theories on black plastic and kikuyu grass? I've made a couple of raised beds about a foot above the ground with bricks, and had filled one with a mix of compost and topsoil before a neighbour dropped by and offered me some black plastic to line the other two beds - he said it was the only way to go, otherwise that kikuyu grass would take over before my eyes.
But lo! Things aren't really growing in those lined beds, while the unlined raised bed is doing all sorts of wonderful with carrots, Brussels sprouts, silverbeet and broccoli all going great guns. The carrots are a case in point actually - I planted four rows in each bed and the lined bed ones have done nothing since they germinated.
Things just look a lot happier on the unlined side of the path. Do you think it is to do with worms? Drainage? (I did put an awful lot of holes in the bottom with the rake). Yesterday I took a lot of the sad looking plants out of that bed and put them in with some happy plants, but as there is a cauli doing well I lost some of my enthusiasm for pulling everything out and removing the lining.
My gut feeling is to remove the plastic, but as I had never met kikuyu before this year I thought I'd ask some local locals...