Italy is the world's largest producer of sunroot, with more than 70% of the global output in 2011. It is mainly grown in the northern regions of Piedmont, Lombardy, and Veneto, where it is known as topinambur or girasole articiocco.
France is the second largest producer of sunroot, with about 11% of the global output in 2011. It is mainly grown in the central and western regions of Brittany, Loire Valley, and Poitou-Charentes, where it is known as topinambour or artichaut de Jérusalem.
Germany is the third largest producer of sunroot, with about 9% of the global output in 2011. It is mainly grown in the southern and western regions of Bavaria, Baden-Württemberg, and Rhineland-Palatinate, where it is known as Topinambur or Erdartischocke.
Spain is the fourth largest producer of sunroot, with about 2% of the global output in 2011. It is mainly grown in the northern and central regions of Galicia, Castile and Leon, and Navarre, where it is known as topinambur or alcachofa de Jerusalén.
China is the fifth largest producer of sunroot, with about 1% of the global output in 2011. It is mainly grown in the northern and northeastern regions of Hebei, Liaoning, and Jilin, where it is known as liánqí or dihuáng.