Hydrangea hirta, also known as the "nettle-leaved hydrangea", is a species of flowering plant in the family Hydrangeaceae that is native to East Asia. Due to the beauty and sturdiness of the species' flowers it can be found outside of its range being used for horticultural and landscaping purposes, and is found in gardens in countries including the United Kingdom and the United States.
Hydrangea is Greek in origin, and comes from Greek meaning "water" and meaning "vessel" describing to the shape of the cup shaped fruit and the capsule the fruit is contained in. The hirta portion of this species name means "hairy". Another name for this species is Hortensia hirta. Hortensia is a Latinised version of the French given name Hortense, referring to the wife of Jean-André Lepaute. In Japan the name for this species is meaning small hydrangea.
Natural hybrids between hydrangea species are rare, but these have been found in the Izu Peninsula of Japan be