Yacon "Purple Earth Apple"

Smallanthus sonchifolius

Yacon is a species of perennial daisy traditionally grown in the northern and central Andes from Colombia to northern Argentina for its crisp, sweet-tasting, tuberous roots. Also known as Peruvian ground apple, Yacon has a similar texture to jícama. The tuber is composed mostly of water and fructooligosaccharide. Hardy in Zones 5 to 8, but it will produce in cooler climates with just fewer tubers. This is a wonderful, hardy food forest tuber. Plant right after your last frost date and harvest after your 1st hard frost. Will grow up to 8 ft tall!!!

Purple Tubers. Mother's sourced orginally from wellspring's garden, see their description here