University of Wisconsin-Madison | Botany Plant Growth Facilities

Botanical Garden

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Genus: Phlox Species: divaricata Common Name: Blue Phlox Family: Polemoniaceae Order: Ericales Native: Eastern North America Habit: Herbaceous Perennial Height: 1 to 1.5 feet Width: 0.75 to 1 foot Flowering Season: Spring Flower Color: Blue, purple, or white Propagation: Seed or stem cutting Zone: 3-8 Note: This plant is suitable for woodland gardens, rock gardens, or border fronts. Monitor plant for spider mites, and mildew. To suppress mildew, cut back the stems after the flowering period. Prefers part shady to shady, moist, well-drained, organic-rich soil.