Phlox laphamii 'Blue Buttons' Wild Sweet William



Phlox laphamii 'Blue Buttons' has deep lavender-blue, fragrant blooms over low mounds of very narrow dark green foliage in late spring. Also known as Wild Sweet William or Woodland Phlox, Phlox laphamii 'Blue Buttons' can form large drifts as its leafy shoots root at the nodes as they spread along the ground. It will also self-sow. A semi-evergreen perennial, Phlox 'Blue Buttons' attracts early spring pollinators.

A subspecies of Phlox divaricata, Phlox laphamii is native to the eastern 2/3 of U.S. north into Canada.

Phlox laphamii 'Blue Buttons' prefers partial to full shade and humus-rich, well-drained soil. It is drought tolerant, but maintain consistent soil moisture for best appearance. Cut back hard after flowering if powdery mildew is a problem.


  • Common Names: Wild Sweet William
  • Zones: 4-8
  • Light Requirements: Part Shade to Shade
  • Soil Preference: Prefers moist, well-drained soil.
  • Height at Maturity: 12-14
  • Width at Maturity: 18
  • Bloom Color: Blue
  • Bloom Time: Mid to late spring

Special Features

  • Attracts: Butterflies. Hummingbirds. Pollinators.
  • Tolerates: Drought.
  • Other Features: Cut Flower. Evergreen. Fragrant. Native to North America.

Care and Growing Tips

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Shipping Info


All orders placed now will ship in Spring 2024 unless requested otherwise.

    • Zones 9&10: Starting March 25th
    • Zone 8: Starting April 1st
    • Zone 7: Starting April 8th
    • Zone 6: Starting April 22nd
    • Zone 5: Starting May 6th
    • Zones 4-2: Starting May 13th

If you live in a warm climate and wish to receive your plants during the winter, please send us an email. Please note that we may be unable to fulfill your request if temperatures are too cold for safe transit or if the plants are dormant.

 plants shipped to your door

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We ship via UPS & USPS (the Post Office), and their ship rates are automatically generated through our site. We do not profit on shipping costs. We are working with these providers to get our customers the best rates possible.

All ship times are subject to change if extreme weather conditions are present here at the nursery or at the shipping destination.

Please note: Depending on the time of year, the foliage of the plants may be trimmed to fit into our shipping boxes. This could delay the flowering of the plant, but many perennials actually benefit from being cut back.

We are currently not able to ship to Puerto Rico, Hawaii, and outside of the US.

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