Running head: GROWTH STAGE KEY Phenological growth stages in mangosteen ( Garcinia mangostana L.) according to the extended BBCH scale Chandrakant M. Awachare & K.K. Upreti Central Horticultural Experiment Station (ICAR-Indian Institute of Horticultural Research), Kodagu-571 248, India Correspondence Chandrakant M. Awachare, Central Horticultural Experiment Station (ICAR-Indian Institute of Horticultural Research), Kodagu-571 248, India. Email: chandrakant.iari@gmail.com Keywords BBCH scale, growth stages, mangosteen, phenology. Received: 21 May 2019; revisions received: 1 August and 16 September 2019; accepted: 16 September 2019. Accepted Article This article is protected by copyright. All rights reserved. This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as doi: 10.1111/aab.12552