Organic gardeners and growers have a very high regard for the common stinging nettle, using the leaves in sprays of several kinds. As well as using nettles as an activator on the compost heap the organic gardener can use them as a liquid manure and as an aphicide.
Gather 224g (l/21b) young nettles and soak in a bucket of water for a week. Strain and use undiluted as a control of aphids on roses and celery leaf miner. Add the mushy nettles to the compost heap.