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A picture of a Rock spiraea

Rock spiraea

Petrophytum spp.

Petrophytum hendersonii - RHS Garden Harlow Carr - North Yorkshire, England - DSC01454 by Daderot (CC0)

Full Sun
Moderate watering
Frost Hardy

H5

RHS hardiness

-15°C

Minimum temperature

Expected size

Height
Spread

Max

Min

Flowering

    • spring
    • summer
    • autumn
    • winter

    More images of Rock spiraea

    A photo of Rock spiraea
    A photo of Rock spiraea
    A photo of Rock spiraea
    A photo of Rock spiraea

    Rock spiraea Overview

    This genus consists of evergreen summer-flowering shrubs, They are grown for their spikes of small, fluffy flowers. They are fully hardy and grow in full sun with gritty, well drained, alkaline soil. You can propagate by softwood or semi-ripe cuttings in the summer or by seed in the autumn.

    Common problems with Rock spiraea

    How to propagate Rock spiraea

    Cuttings

    Softwood or semi-ripe cuttings in summer.

    Seed

    Seed in autumn.

    Other uses of Rock spiraea

    Grown for their spikes of small, fluffy flowers. It is good for growing on tufa or in alpine houses.