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Hydrangea hirta (Nettle-leaved hydrangea, ko-ajisai)

¥1,400 (incl. tax)

Found in the low mountains of the Kanto region and in western Honshu, Shikoku, and Kyushu in Japan. Belongs to the family Hydrangeaceae.


Its Japanese name, ko-ajisai, (meaning “small hydrangea”), derives from its smaller than ordinary size for a hydrangea.

  • Easy to Grow★★★★★
  • Height at DeliveryAbout 10-20 cm
  • Scientific NameHydrangea hirta
  • FamilySaxifragaceae
  • Common NamesOkutama ko-ajisai, shiba ajisai
  • Flower ColorPale blue to pale pink
  • Flowering PeriodMay to June
  • Sun ExposurePrefers locations with full sun
  • WaterDaily and in abundance
When you purchase wildflowers, flower pots and moss are available as additional options.