Diervilla sessilifolia 'Cool Splash' The first variegated Diervilla. Foliage is clean and bright, right up until first frost. Yellow flowers in upright clusters, June into July. Dense, rounded and spreading shrub 3-4' tall and wide. Sun to moderate shade. Adaptable to a wide variety of soils. Colonizing over time. Use in woodland settings or in mass for a spectacular effect. Dwarf Bush Honeysuckle