The genus Deutzia spans a remarkable geographic range, from the mountains of Mexico and Pakistan across the Himalayas to the forests of Japan and the Philippines, yet its members share a unifying quality: months of quiet green anonymity punctuated by an extravagant flush of spring flowers. The genus was named in the 1770s by Carl Peter Thunberg in honor of Amsterdam businessman and amateur botanist Johan van der Deutz, who funded Thunberg's explorations. There are 68 recognized species, plus a sprawling collection of hybrids and cultivars with an occasionally tangled nomenclatural history.

In the garden, Deutzia rewards generously in return for very little. Fertile, well-drained soil is preferred, but most species adapt to average conditions and develop solid drought tolerance once established. Flowering is most abundant in full sun, though afternoon shade is welcomed in warmer climates. Pruning immediately after bloom is the key discipline to observe, since next year's flowers develop on the current season's wood. The range across species is considerable — from compact 1-foot groundcover forms to arching specimens pushing 10 feet — making it worth selecting carefully for the intended space.