Super Ka-Pow® Blue - Tall Phlox

Balsukalu is the blue-flowered selection in the Super Ka-Pow™ tall garden phlox series. Darwin Perennials lists this selection as PP33,885 and gives the series a typical height of 18–20 inches, June-to-August bloom, and USDA hardiness zones 4b–9a. Its catalog describes robust, oversized blooms, a larger habit with improved branching, and powdery mildew resistance. The Royal Horticultural Society's profile for tall garden phlox recommends fertile soil that stays moist but drains well, in full sun or partial shade. Use those conditions to support a dense display of summer flower clusters; give plants room for air movement and water at the soil line during dry weather. The flower color and series details here are specific to Balsukalu, while the general growing guidance describes Phlox paniculata. See the [Darwin Perennials catalog](https://catalog.darwinperennials.com/view/311528478/104/) for the selection and series information, the [RHS phlox profile](https://www.rhs.org.uk/plants/12736/phlox-paniculata/details) for general culture, and the [Balsukalu plant patent](https://patents.google.com/patent/USPP33885P2/en) for the cultivar denomination. ## Maintenance Keep the root zone evenly moist during establishment and prolonged dry spells, while avoiding waterlogged soil. Remove spent flower clusters for a tidier display and cut back old stems after flowering or in spring.