Winter-dormant perennial crops of asparagus and rhubarb may not be showing any signs of life yet, but they will at least be thinking about it! (Even though the first locally grown asparagus spears are available in shops already, my first spears don’t emerge until early October.) Remove any weed growth around both of these crops and mulch them well to stop another rash of weed seeds germinating in spring. No weeds also means no place for slugs and snails to hide, while mulching also helps insulate the soil, warming it up just a notch. harvest mode. Bridge the gap between the last winter brassicas and the first summer salad greens with spinach, silverbeet or colourful Swiss chard. Plant a row of spinach (or the mild ‘Perpetual’ variety of silverbeet) under a cloche or plastic-covered grow tunnel to cut the growing time from plot to plate.