Flowers on most hydrangeas are pH-sensitive, with dark purple or blue flowers in acidic soil, white or dull green in neutral earth, and pink in alkaline soil. May be evergreen in winter-free areas. In its northernmost range, it is a foliage shrub, since buds are killed in hard winters. Location Native to Japan and Korea. Naturalized in compatible climates.
Culture Likes loose, rich, moist but well drained soil.
In northern range, prefers full sun. In hot summers blooms fine in sun or part shade, but appearance is best in afternoon shade, since hot sun makes the plant wilt, whether or not it has been watered. Prune off flowers as soon as they begin to fade, since plant sets new buds soon after blooming. Partial shade to sun. Moist, well drained soil.