New Phytologist Editor Keith Lindsey in conversation with Geraint Parry for the Arabidopsis Research Roundup (http://blog.garnetcommunity.org.uk/arabidopsis-research-roundup-3/). Keith describes work that aims to dissect the complex hormonal regulation of root growth, published in an Open Access paper by Rowe, et al.: Rowe JH, Topping JF, Liu J, Lindsey K (2016) Abscisic acid regulates root growth under osmotic stress conditions via an interacting hormonal network with cytokinin, ethylene and auxin. New Phytolologist. http://dx.doi.org/10.1111/nph.13882