Growth and flowering of bleeding heart were promoted by 14 to 24 hour photoperiods or light interruptions in the middle of the night. Cold treatment of crowns promoted growth and flowering at short photoperiods. Light at 9 klx promoted growth and inflorescence formation, but greater intensities were required to achieve anthesis. Growing temperatures of 15-22.5°C were most desirable.
Journal paper no. 6196 of the Agricultural Experiment Station.
Associate Professor of Horticulture, ESA, UFV, 36570, Mines Gerais, Brazil, on leave 1972-1974 as USAID Fellow, Department of Horticulture, Purdue University.