Panicle Hydrangea

Panicle hydrangea is the hydrangea that blooms on new wood, which means it flowers reliably every single year regardless of what winter did to the plant. The flower heads are conical rather than round, pyramidal panicles that start white or lime-green in midsummer and gradually age through pink to rose to dried brown by fall. 'Limelight' is the cultivar that put this species on the map: a vigorous selection with lime-green panicles that turn pink with age. 'Little Lime' offers the same effect in a compact form. Native to Japan and eastern China, panicle hydrangea grows ten to fifteen feet in the species form, though compact cultivars stay under six feet.

In Western Washington, panicle hydrangea is the most reliable hydrangea you can plant. Because it blooms on new wood, you prune in late winter, hard if you want, and it flowers on the current season's growth. No bud loss from frost, no worrying about pruning timing. Full sun produces the densest flower heads, though it handles part shade. It tolerates a wider range of soils than bigleaf hydrangea and does not require the acidic conditions that mopheads prefer. No significant disease or pest concerns are tracked. The dried flower heads provide winter interest if left standing, or cut them for indoor arrangements. For a hydrangea that never fails to bloom and does not demand soil amendments, panicle hydrangea is the practical choice.