Categories DavidDyer’s rocket flowers reaching upwards Post author By David Post date 20 August 2015 Yellow flowers of dyer’s rocket up the plant’s tall, elegant stem. Now a common weed or wildflower according to taste, the plant was an important source of textile dye until the invention of synthetic alternatives in the Victorian age. ← Tortoiseshell butterfly caterpillars on nettle leaves → Small skippers, thistle flowers