Super little pickling or cocktail onions, Onion Paris Silver Skinned are easy and quick to grow and do well on the poorest soils. Sow thickly and the resultant competition will prevent the bulbs from getting too large for pickling purposes.Sow seeds thickly from March to April, preferably in light sandy soil which has been well prepared and raked to a fine tilth. Sow seeds in shallow drills 15-20cm(6-8in) apart. Shallow sowing is necessary if round bulbs are required.No thinning is necessary. Keep the ground weed free and harvest from June onwards.