Substrate volumetric water content (VWC) in Rhododendron catawbiense cultivars grown in a noninfested medium (Control) and media infested with P. cinnamomi or P. plurivora and irrigated two times a day (1.0X). (A) Average mid-day values (n=10) for R. catawbiense ‘Boursault' (Trial 1). (B) Average daily (n=5) values in Rhododendron catawbiense ‘Roseum Elegans' (Trial 2). P. cinnamomi data points to left of 6 WAI are for 100 ppg and those to the right for 1 ppg. (C) Average daily (n=5) values in Rhododendron catawbiense ‘Roseum Pink' (Trial 3). For trials 1 to 3, respectively, plants inoculated on 06 July 2015, 12 July 2016, or 05 May 2017; flooded 2, 2, or 3 weeks after inoculation (WAI); and harvested 27, 26, or 23 WAI.