Possible Clues:

• Member of the onion family
• Growth seen on upturned ship's bottom
• It's for Wales to turn up in Achill
• Keel over in the vegetable patch
• Sounds like what a ship might spring to make it turn bottom up
• Ken, ex-striker fittingly capped by Wales
• Staffs. town; vegetable
• It may be because of the hole in it, by the sound of it, that makes the vessel turn bottom up
• Vegetable and national emblem of Wales
• Plant related to the onion, pair with potato for soup