Neon Flash Spirea
- Steven Dunn
- Aug 2, 2020
- 3 min read
Updated: Aug 3, 2020

Neon Flash spirea is just one of several shrubs in its genus that has made a big splash in North American landscaping. You will see this plant called Spiraea japonica Neon Flash, and also see Spiraea x bumalda Neon Flash. Spirea plants are classified as broad leaf, deciduous flowering shrubs. They belong to the rose family.
Characteristics
The name indicates the brilliance of this plant's deep pink flower clusters. Flower bloom in early summer. Neon Flash sends multiple stems, all covered with dense green foliage, straight up from its base and reaches 3 feet tall by 3 feet wide. Leaves have a bit of reddish color in spring; that same color reappears darker in fall. The foliage offers a relatively delicate texture, the leaves are simple and usually short stalked, and are arranged in a spiraling, alternate fashion. They can form a contrast with larger-leafed plants such as oakleaf hydrangea. Neon Flash is a plant that attracts butterflies. It also attracts birds and bees.
Ideal Conditions
The species plant is native to Japan. It grows in zones 4 to 8 in North America. Plant it in full sun to partial sun and in well-drained soil. While one of the good points about spirea bushes is that they are not fussy about their growing needs, they are very drought resistant, planting them in a loamy soil enriched with compost will promote the best performance. As a bonus they are deer and rabbit resistant, deer rarely eat them.
Uses in Your Landscape
Neon Flash bushes may be attractive enough to use as specimen plants for the summer when they bloom, provided that you are industrious enough to deadhead them faithfully to encourage reblooming, but Gold Mound and Goldflame are better-suited to serve this function. You can also mass them together in landscaping property lines or grow them in front of a house, as foundation shrubs. Care and Maintenance Pruning is optional, as these plants stay reasonably compact, but if you do wish to prune Neon Flash spirea bushes to improve their appearance, here is how to do it: Prune back the oldest few branches to ground level every other year.Prune the remaining branches in early spring (these spirea bushes bloom on new wood) to within a foot or so of the ground, to encourage vigorous new growth.Neon Flash spirea bushes will flower again if you deadhead or lightly trim them after the initial blooming.
Similar Plants
One outstanding feature of spirea bushes, in general, is that they require little maintenance. Maybe you grew up with Vanhoutte spirea (S. x vanhouttei) in your parents' yard that has not received much attention for decades. Even after such neglect, it may well still produce clusters of white flowers every spring. Neon Flash spirea is also low-maintenance. Those seeking interesting foliage colors may select Gold Mound spirea, which lights up a landscape with its golden leaves. The foliage of Goldflame spirea is not as bright as that of Gold Mound but offers a two-toned effect. Both Gold Mound and Goldflame bear pink flowers. Another pink-flowering shrub is the Anthony Waterer spirea. In fact, Neon Flash is considered an improvement on Anthony Waterer, which has been around longer. Bridalwreath spirea has white flowers, but, unlike on the Vanhoutte, the flowers are larger, double, and do not appear in such tight clusters.
Come on down to see all of our spireas and other lovely plants.