Spireas

Spireas are tough, adaptable shrubs that combine colorful foliage, dependable flowers, and a tidy mounded habit with very little care. Most stay between two and five feet, which suits foundations, borders, and mass plantings.

Many modern selections offer bright gold, orange, or burgundy new growth that provides color even when the plant is not in bloom.

Japanese and birchleaf spireas bloom in early to mid summer, with flat clusters of pink, red, or white flowers. Bridal wreath and similar old-fashioned types bloom in spring on arching stems.

Shearing summer-blooming spireas lightly after the first flush often brings on a second round of bloom later in the season.

Summer-blooming spireas flower on new wood and can be cut back hard in late winter or early spring to keep them compact and encourage fresh colorful growth. Spring-blooming types should be pruned right after they flower.

Removing a few of the oldest stems at ground level every few years keeps mature plants vigorous.

Spireas are generally considered deer-resistant and are a good choice where deer pressure is high. Browsing is occasional and rarely serious.

They are also tolerant of urban conditions, road salt, and a range of soils, which makes them reliable for difficult sites.

Spireas perform best in full sun, which brings out the strongest foliage color and heaviest bloom. They tolerate light shade but may grow more open and flower less.

Well-draining soil of average fertility is all they need; rich soil and heavy feeding can produce soft growth.

Spireas grow at a moderate to fast rate and typically reach their mature size within a few seasons. Many dwarf selections stay under three feet with little or no pruning.

Fast establishment makes them useful for filling new beds and for mass plantings where quick coverage is wanted.