|Neon Flash is a larger variety with carmine-red inflorescences and bright new growth turning a deep green. Mature height to three feet. This semi-deciduous shrub has erect shoots and a clump forming growth habit. Leaves are lance shaped, dark green, toothed, to 5 inches long. Flowers appear in flat clusters in early summer. This plant works well in the front of a shrub border, the back of a perennial border, or as a foundation planting. This shrub can grow in either acid or alkaline soils and though it prefers moisture, can withstand some drought.