Kerria japonica 39golden guinea39 is a very easy to grow deciduous shrub sometimes called the 39japanese rose39 the original cultivar was discovered by william kerr a young kew gardener who had been employed by the east india company in 1804 to search for undiscovered plants in china that could be brought back to the uk and used in british gardens 39golden guinea39 is bigger and brighter than the original plants that were imported and holds an award of garden merit from t