Garden phlox has the height and presence to bring color to difficult-to-fill spots such as the back of a border. And there is a range of flower colors to choose from, including bicolors. Garden phlox also makes a great cut flower.
Good companions include: Russian sage (Perovskia atriplicifolia), daisies, black-eyed Susan (Rudbeckia spp.), coreopsis, Heliopsis, upright sedum.
Plant Type: Perennial
Height: 3–4 ft
Width: 2–3 ft
Light Exposure: Full Sun, Partial Sun
Bloom Color: Orange, Pink, Purple, Red, White
Bloom Time: Mid Summer, Late Summer, Early Fall
Foilage Color: Green, Variegated
Special Features: Attracts Butterflies, Fragrant Flowers, Low Maintenance
Uses: Cut Flowers, Back of Border
Growing Garden Phlox
Garden phlox is easy to grow—if you give it the right conditions. It can develop powdery mildew on the leaves (unsightly but not lethal) in humid weather. To help prevent that, plant your phlox where it gets good air circulation. Alternatively, you could mask any unsightly foliage with companion plants that are slightly shorter, such as a compact grass, shrub, or perennial.
Give plants plenty of sun in rich soil, watering regularly until they are established. Garden phlox can withstand drought, though the leaves droop and look unattractive, so regular irrigation is best. Avoid wetting the foliage in the evening, as it can encourage foliar diseases. Garden phlox can spread aggressively. If it starts to take up too much of a bed, simply divide the plants in spring or fall and share the divisions with friends.