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Native Wildflower · Easy to moderate

How to Grow Wild Blue Phlox

Phlox divaricata

Your complete guide to growing Wild Blue Phlox.

☀SunPartial shade (4-6 hours)
💧WaterHigh — consistent moisture needed
🗺Zones3–8
📏Height6-12 inches
Wild Blue Phlox📷 Wikimedia Commons

When to Plant Wild Blue Phlox

Planting windows vary by USDA hardiness zone. Look up yours by ZIP code.

ZoneStart IndoorsDirect SowHarvest
Zone 3 — May – July —
Zone 4 — April – June —
Zone 5 — April – June —
Zone 6 — April – June —
Zone 7 — March – May —
Zone 8 — March – May —

Companion Plants for Wild Blue Phlox

✓ Good companions

Astilbe

Shares preference for partial shade and moist soil conditions

Coral Bells

Provides contrasting foliage texture and helps retain soil moisture

Ferns

Create natural woodland partnerships and help maintain consistent soil moisture

Trillium

Shares similar woodland habitat preferences and blooming periods complement each other

Virginia Bluebells

Both prefer moist, rich soil and create beautiful spring color combinations

Wild Bergamot

Attracts butterflies and beneficial insects while deterring harmful pests

Wild Columbine

Attracts beneficial pollinators and thrives in similar light conditions

Wild Ginger

Provides complementary ground cover and thrives in similar partial shade conditions

✗ Keep away from

Black Walnut

Produces juglone which is toxic to phlox and inhibits root development

Eucalyptus

Allelopathic compounds suppress growth of native wildflowers including phlox

Mint

Aggressive spreading nature can overwhelm and outcompete wild phlox

Notes from the garden

A greener inbox, occasionally.

Seasonal planting ideas, useful tips and a little inspiration. No weeds.