Go Back Phlox Blue Boy

Phlox paniculata 'Blue Boy'
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Plant Type: Perennials

Soft, blue flowers with a little, white eye are produced in abundance nearly all summer long. Cut some of these wonderfully fragrant blossoms for a long-lasting bouquet indoors. They attract butterflies and hummingbirds. The new leaves of 'Blue Boy' have a bluish-black overlay.

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Growing & Maintenance Tips:

Phlox paniculata is unequaled for showy blooms over a long period throughout the summer. Though they are some of the most popular perennials available, they do require some maintenance to sustain their health and vigor. Tall Garden Phlox grows best in rich, moist soil in full sun. Overhead watering should be avoided since some varieties of phlox are susceptible to powdery mildew. This can be avoided or diminished by providing ample air circulation around the plants and by thinning them out periodically. Deadheading will prolong bloom time and prevent self-seeding.

Flower Color

Soft blue with white eye

Foliage Color

Plant Spread

18-24 in.

Good Companions

Coneflower-Purple (Echinacea purpurea), Daylily-Designer (Hemerocallis ), Gayfeather (Liatris spicata), Salvia-Perennial (Salvia nemorosa), Shasta Daisy (Leucanthemum superbum)

Plant Height

36 in.

Scape Height

Hardness Zone


Soil Moisture

Average water needs

Characteristics & Attributes


Border, Mass Plant, Cut flower or foliage, Fragrant flowers or foliage

Bloom Time

All summer

Critter Resistance


Full sun

Growth Rate


Seasonal Interests