Plant roots can grow without limit. To do so, they need to balance the production of new cells via cell division and elongation. Plant hormones known as brassinosteroids play a key role in this balancing act. New work by the team of Dr. Jenny Russinova (VIB-UGent Center for Plant Systems Biology) unravels how brassinosteroid production is localized in plant roots for optimal growth patterns. Their study is published in the journal Nature Plants.