The pastels are made in Northumberland contain only pure pigments in a cycle of related hues, instead of adding white or black to the colors. The result is intense, vibrant color not muddied by the blending of colors. Unison's pastels contain very little binder, making them truly soft and smooth. They are mixed to meticulous recipes and are based on traditional pigments such as cadmiums, cobalts and natural and synthetic earths. Sticks vary slightly due to the hand-making process.

The colors contained within this set are specially selected for botanical artists, helping them invoke a range of rich and bright floral colors. Colors in the set:

P7, OR1, Y9, A11, LT3, GRAY28, YGE18, DK11, GRN32, GRN29, GRN35, Y6, A30, BV5, BV4, RED14, RED15, A6.