The effects of plant age, photoperiod, vernalization, and temperature on the growth and development of Aquilegia and Gaura

tudies were conducted to determine the effects of plant age, vernalization, temperature, and photoperiod on the growth and development of a select group of Aquilegia and one cultivar of Gaura. Aquilegia were cold treated as either plants established in 5" containers, or small seedlings. Gaura were cold treated only as small cuttings. Plants were cooled at...