Toots Zynsky is one of the few women to achieve widespread acclaim in the studio glass field. Her vessels do not involve blowing glass or pouring it into a mold. She uses a process called filet de verre, in which many thin threads of glass are fused together and slumped into shape. At first, she pulled glass threads by hand, but in 1983 she began using a custom-built machine that semiautomated the process. This bowl was one of the first pieces she made using this machine. Zynsky purchased the bright green opaque glass from the Venetian glasshouse Moretti. She had not used this particular glass before, and when she fired it, the ends of the threads curled up. Spring Grass II was her second attempt, for which she adjusted the level of heat to obtain her desired result. Zynsky has continually refined her technique through research and experimentation. Spring Grass II documents her pioneering approach to working glass.