The growth regulators used were paclobutrazol (Cultar 250 g L-1) and chlormequat chloride (Cycocel 11.8 %). Treatments with paclobutrazol were dosed at 0, 5, 10 and 20 mg L-1, and with chlormequat chloride at 0, 2000, 4000 and 6000 mg L-1. These solutions were applied directly to the plant substrate (100 ml per pot) and the application frequency was once and twice a month (every fortnight), for 5 months.