Being March in the Southern hemisphere, winter is approaching. I have just had my very-weedy front yard levelled. Most of the weeds have been removed, but I don't want to sow grass until I've given some of the remaining weed stalks a chance to show themselves so I can dig them out.
I'm thinking about sowing lupins to cover the ground in the meantime. I think lupins would have the added advantage of growing relative quickly (as the seeds are large).
Are there any alternative winter cover crops that have allelopathic properties (so would prevent or slow growth of at least some of the weeds).
I'm in New Zealand, with a moderate climate. Temperatures will range roughly between -5 (overnight) and 15 C over the winter.