Phlox paniculata 'Cool Water' - 2026

Phlox paniculata ‘Cool Water’ is a striking perennial known for its upright clusters of soft lilac-pink flowers that bloom from midsummer into early autumn. The tall flower spikes rise above lush green foliage, providing height, structure, and long-lasting colour to borders, cottage gardens, or mixed planting schemes. Its nectar-rich blooms attract bees, butterflies, and other pollinators, offering both ornamental and ecological value.

Thriving in fertile, well-drained soil, this hardy perennial prefers full sun to partial shade and forms dense, low-maintenance clumps that return reliably each year. Regular deadheading encourages further blooms and helps maintain a tidy habit. Phlox paniculata ‘Cool Water’ combines long-lasting floral display, wildlife support, and resilience, making it a versatile and rewarding choice for UK gardens seeking summer and early autumn interest.