Flowering and nutritional status in Gladiolus hybridus L. 'Black Velvet' were assessed following gibberellic acid treatment (GA₃). Treatment were applied to corm (12–14 diameter) by soaking for 30 min in water solutions of GA₃ at 100, 350 and 600 mg/dm³with a control consisting of soaking-in water. All GA₃ treatments inhibited elongation of inflorescence shoots and stimulated spike elongation. None of the tested concentrations affected the number of

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... eveloping flowers in the spike, except for the 100 mg/dm³ in the 2nd year of the study. All GA₃ treatments stimulated calcium uptake, but had no effect on the uptake of other macronutrients. All the GA₃ treatments increased manganese content in leavesbud did not affect copper content. GA₃ at 600 mg/dm³ stimulated uptake of iron and boron at 600 mg/dm³ but inhibited both at lower concentrations. Zinc uptake was stimulated at 100 mg/dm³but inhibited at higher concentration.