Hydrangea pan. Hercules is named after the Greek hero Hercules, known for the 12 difficult works he had to perform. The work of breeder Guido Rouwette was also difficult: developing a strong paniculata with huge, dense flower plumes on strong stems. And he succeeded! Hercules has huge, full flower plumes with lots of flowers. The flowers are white-green with a pink blush. In addition, Hercules also gives a lot of flowers. This plume hydrangea becomes approx. 1.5 – 2m high and wide and is very suitable for in the shrub border, for mass planting or for on balcony or terrace. Hercules likes a spot in the sun or semi shade. Hardy to -30 ºC.