hardhack

noun

1. a woolly-leaved North American shrub, Spiraea tomentosa, of the rose family, having short, spikelike clusters of rose-colored flowers.
2. shrubby cinquefoil.

noun

1. a woody North American rosaceous plant, Spiraea tomentosa, with downy leaves and tapering clusters of small pink or white flowersAlso called: steeplebush