Plant Encyclopedia

Neon Flash Spirea

Spiraea japonica ‘Neon Flash’

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Spiraea japonica ‘Neon Flash’, bright red flowers

Discover More Information On Neon Flash Spirea

Do you want to add a splash of color without any of the hassles? You should take a look at the Neon Flash spirea (Spiraea japonica ‘Neon Flash‘). With its vibrant green leaves and reddish flowers, you can enjoy a wide variety of colors. Starting in the spring, the blooms produce a striking neon red color that lasts until the fall. For bold color throughout your outdoor spaces, make sure to choose these low-maintenance shrubs for your landscape.

Plant Attributes

During the spring, the lance-shaped leaves put on a show with their bold reddish tones. In the summer, the red foliage fades into a striking dark green. By the autumn, those colors deepen into a selection of purple and burgundy hues. The spirea’s flowers burst with cherry-red blooms from spring to fall.

You can expect this shrub to have successive flushes throughout the growing season. If you want the blooms to develop quickly, then you should grab a pair of shears to remove those old flowers.

The Neon Flash spirea grows into a compact and rounded shape, and it will fill out throughout your landscape. The flat-topped form of this spirea makes the perfect spot for those butterflies to land in your yard. These visitors love to sip on the sweet nectar of the blooms.

This shrub is full of brilliant colors, and it will develop fast in your outdoor spaces. If you are looking for a pop of color that lasts throughout the year, then the Neon Flash spirea is the best choice for you.

Landscape Use

A single row of Neon Flash spirea helps to highlight some of your established plants. These colorful plants make a great choice to spruce up those dull and boring spaces. The compact mound of green foliage can cover up those bare spaces that have some leggy plants.

The Neon Flash spirea works the best as a natural facer plant. Wherever you plant it, this shrub provides a burst of color. For the best result, make sure to plant these shrubs two feet apart on the center for a reliable hedge.

This hardy shrub is perfect as a mass planting, and it will boost those bare, open spaces. If you decide to use this plant as a hedge, mulch should be added until the spirea has filled in the area.

Since these plants are a welcome sight for local pollinators, you want to add a few Neon Flash spireas near those fruit trees or vegetable gardens. These shrubs will entice pollinators to keep your garden bountiful and healthy.

Planting & Care

The Neon Flash spirea adapts well in USDA hardiness zones 4 to 8. If you want to have the best color, then these plants need full sun exposure. They require at least six hours of direct sunlight per day.

These plants thrive in well-draining soils that have plenty of organic material. If you are planting in a heavier soil with water retention, consider planting these shrubs in a raised bed. You might want to add organic compost for a healthier plant.

This shrub will require a moderate amount of water regularly. By adding a thick layer of mulch, you can reduce water evaporation and protect those roots.

In the late winter to early spring, you should think about pruning the Neon Flash by half. By doing this, you ensure that the shrub has a uniform size before the flowers start to bloom.

If you are looking for more flowers, it is recommended to deadhead the plant. After the first spring blooms, a light prune will help to produce more flowers. Fertilizing should be done in the early spring. You will want to use an organic, slow-releasing fertilizer.

Additional Information

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Neon Flash Spirea


For an added pop of color, add the Neon Flash spirea to your outdoor spaces. The bright red flowers and rich green foliage put on a spectacular show throughout the year. Once the growing season has ended, you are treated to a rich burgundy color. Even those butterflies in your yard will love to visit these unique shrubs. You cannot miss out on these richly colored spireas for your outdoor spaces.

If you want to add the Neon Flash spirea, we are ready to help. At Arbor Valley Nursery, we have a wide selection of items, including the Neon Flash spirea. For more information about these durable shrubs, take a few minutes to fill out the contact form.

Plant Features

  • Watering Needs: Water regularly – weekly, or more often in extreme heat or containers.
  • Botanical Pronunciation: spy-REE-a juh-PON-ih-kuh
  • Plant type: Shrub
  • Deciduous/evergreen: Deciduous
  • Growth rate: 2 – 10, 14 – 21
  • Average landscape size: reaches 3 ft. tall and wide.
  • Special features: Easy Care, Fall Color, Fast Growing, Tolerates Urban Pollution
  • Foliage color: Green
  • Blooms: Late Spring through Fall
  • Flower color: Red
  • Flower attributes: Flowers for Cutting, Showy Flowers
  • Garden style: Cottage, Rustic
  • Companion Plants: Weigela (Weigela); Salvia (Salvia); Coneflower (Echinacea); Ninebark (Physocarpus); Barberry (Berberis)

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