Nov. 20, 2013
Paclobutrazol is a plant growth regulator that belongs to the triazole group of pesticides. It inhibits the rate of cell division through the inhibition of gibberellin and sterol biosynthesis. In Canada, it is registered for use on greenhouse container-grown ornamental annual bedding plants in cellpacks, and/or plug trays (begonia, celosia, coleus, impatiens, petunia and salvia), and in pots (geraniums, poinsettias, petunias and chrysanthemums) to produce more compact plants and to enhance flowering. Paclobutrazol is applied by growers or commercial applicators as a foliar spray or drench application using hand-held equipment.