Yacon is a 2-metre tall, sunflower-like annual that produces an abundance of cream-colored tubers, which are harvested when the large plant dies back in June. The tubers are attached to rhizomes, from which the next generation is spawned.
The sought-after rhizomes become the breeding material for the next crop. Each plant produces around thirty good-sized rhizomes and this becomes a substantial secondary income stream for yacon producers. Each rhizome reliably produces a vigorous new plant, which is best started in a nursery during Winter and transplanted into the soil in Spring.