[en] Pictures and data collected in an experiment at greenhouse conditions to evaluate the height growth and biomass of castor plants (Ricinus communis) exposed to artificial shade and treated with five plant growth regulators (chlormequat chloride, gibberellic acid, mepiquat chloride, paclobutrazol, and trinexapac-ethyl). For comparison, some plants were exposed to full sun radiation.[pt] Fotografias e conjunto de dados colhidos em um experimento em casa-de-vegetação com objetivo de avaliar a altura e a biomassa de plantas de mamona (Ricinus communis) crescendo sob sombra artificial e tratadas com cinco reguladores de crescimento (cloreto de clormequat, cloreto de mepiquat, ácido giberélico, paclobutrazol e trinexapac-etil). Para comparação, algumas plantas foram expostas à radiação solar plena.