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Wild Blue Phlox

Phlox divaricata

Wild Blue Phlox

General Information

Wild Blue Phlox is an easy-to-grow, spreading herbaceous perennial.

Wild Blue Phlox is typically found growing on forest floors. Wild Blue Phlox prefers partial to full shade and moist, rich, well-drained soils.

Wild Blue Phlox has slightly-fragrant, showy Blue/Purple/Lavender tubular flowers and blooms between April and May.

Plant Information

Plant Type:

Herbaceous perennial

Sun Preference:

Part Sun * Shade

Soil Moisture Preference:

Medium-Wet * Medium * Medium-Dry

Plant Height:

1 foot

Plant Width:

1 foot

Plant Spacing:

1 foot

Flower Color:


Flower timing:

April to June

Culture Information:

Wild Blue Phlox works best in pollinator gardens, butterfly gardens, native gardens, rock gardens, rain gardens, naturalized areas, woodlands, or borders. Wild Blue Phlox is also effective for interplanting with early spring bulbs and makes an effective groundcover.

When first planted, Wild Blue Phlox should be watered weekly for first few months, unless at least an inch of rain has been received in the last week to help it get established. After it becomes established, Wild Blue Phlox appreciates some watering during extended dry periods.

Wild Blue Phlox can be cut back to the ground in late fall or over winter. If powdery mildew becomes an issue, cutting back stems after blooming will help. It appreciates a light summer mulch to help retain moisture. Wild Blue Phlox will spread via leafy shoots that root at the nodes along the ground.


Dry Soil
Clay Soil

Pests & Disease:

Spider mites (quite common around here) can be a serious problem for Wild Blue Phlox. Spider mites tend to be a problem during hot, dry conditions. They can be removed with a good spray from a garden hose.

Powdery Mildew can be a serious problem with Wild Blue Phlox. Good airflow is critical to limiting the disease.

Wildlife Use:

Pollinators: Wild Blue Phlox attract bees, butterflies and other pollinators.

Birds: Ruby-throated Hummingbirds will use Wild Blue Phlox as a nectar source

Mammals: Wild Blue Phlox is browsed by rabbits.

Other: N/A.

Native to:

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