Gerald L. Klingaman
Family
Polemoniaceae
Botanical Name
Phlox divaricata
Plant Common Name
Wild Blue Phlox, Woodland Phlox
General Description
Wild blue phlox is a spreading, spring-blooming perennial that originates from eastern North America, from Quebec all the way down to Florida and Texas. Lots of variation exists in the appearance, hardiness and cultural needs of wild populations. Northerly stock tends to be completely herbaceous, while southern populations often produce fully evergreen mats of foliage. In the wild, this woodland wildflower tends to favor prairies, meadows and moist, open forests.
Mats of fresh, spreading foliage appear in spring from which rise stems topped with clusters of delicate, tubular, starry flowers. Bloom time is zone dependent, but most wild blue phlox flower in mid-spring. Flowers may be rich purplish blue, pinkish blue or white and appear in open clusters atop upright or splayed stems. Hummingbirds and butterflies love the blooms. Plants may self-sow if their spent flower stems and subsequent seed heads are not removed.
Wild blue phlox thrives in woodland settings with moist, fertile, well-drained soil and partial shade. The clouds of spring blooms and creeping habit make this an excellent plant for naturalizing. Like many spring bloomers, wild blue phlox tends to look pallid as the season progresses, so it’s wise to plant it among other wildflowers that will shine later in the season. Seedlings are often produced and should be kept to encourage naturalization of this favorable wildflower.
Characteristics
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AHS Heat Zone
8 - 1
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USDA Hardiness Zone
4 - 8
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Sunset Zone
1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17
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Plant Type
Perennial
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Sun Exposure
Partial Sun, Partial Shade
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Height
12"-14" / 30.5cm - 35.6cm
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Width
12"-18" / 30.5cm - 45.7cm
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Bloom Time
Spring
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Native To
Northeastern United States, Mid-Atlantic United States, Southeastern United States, Central United States, Texas, Canada
Growing Conditions
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Soil pH
Acidic, Neutral
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Soil Drainage
Well Drained
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Soil type
Loam
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Growth Rate
Fast
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Water Requirements
Average Water
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Habit
Mat-forming
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Seasonal Interest
Spring
