Indian Horticulture Journal

The complete research work was carried out in the Floricultural Research Laboratory, Department of Floriculture and Landscape Architecture, College of Horticulture Mudigere, Karnataka during 2013-014 with single experiment with completely randomized design with factorial concept. The tuberose spikes were treated with different food dyes used are tomato red, rose pink, lemon yellow, kesar yellow, apple green and blue with two concentrations (6 and 8%) and three durations (4, 6 and 8 hours). The darkest shades of colours were obtained at 8 percent concentration with 8 hrs durations of food dyes treatments for tuberose spikes.