How to Grow Autumn Phlox
Phlox paniculata
Your complete guide to growing Autumn Phlox.
When to Plant Autumn Phlox
Planting windows vary by USDA hardiness zone. Look up yours by ZIP code.
Companion Plants for Autumn Phlox
✓ Good companions
Complementary bloom times and heights, attracts diverse beneficial insects including predatory wasps
Low growing companion that doesn't compete for light, helps retain soil moisture
Blooms simultaneously to create pollinator hotspot, attracts beneficial predatory insects
Provides structural contrast and wind protection, shallow roots don't compete with phlox
Blooms simultaneously, attracts beneficial pollinators and creates stunning fall color combinations
Similar growing conditions, sequential blooming extends pollinator season, sturdy stems provide mutu…
Both attract butterflies and hummingbirds, bergamot's aromatic oils help deter harmful insects
Ground cover that retains soil moisture and suppresses weeds around phlox base
✗ Keep away from
Aggressive invasive shrub that outcompetes native plants for nutrients and light
Produces juglone toxin that inhibits growth and can kill phlox and most other plants
Allelopathic compounds in roots and leaves inhibit growth of native wildflowers