How To Grow Phlox Seeds

How To Grow Phlox Seeds

Updated on Nov 26, 2021
By Shannon McCabe

Latin name Phlox drummondii is an annual wildflower. It is a beautiful ornamental with delightful fragrance.


HISTORY

Native to Texas and found in a wide range across the Southeast. Named for Scottish botanist Thomas Drummond, who collected samples and sent them back to Europe in the 1800s.

USES

  • Ornamental
  • Beds, borders, containers, cottage garden, fragrant/sensory garden
  • Pollinator garden. Phlox is frequented by a number of species of butterflies, bees, bumblebees, moths and even the occasional hummingbird.


  • Seeds germinate in 14-21 days.
  • Start seeds indoors 6-8 weeks before last frost and transplant after all chance of frost has passed.
  • Sow seeds 1/8 inch deep.
  • Ideal germination temperature is 65 F.
  • Keep seeds evenly moist until germinated.

  • Phlox can tolerate full sun to shade.
  • Rich, well-drained soil is best.
  • Provide adequate moisture.
  • Space plants 8 inches apart.
  • Deadhead spent flowers to encourage continued blooming.

PESTS/SPECIAL CONSIDERATIONS

  • Powdery mildew and fungal issues are common pests of phlox.
  • These can be avoided by improving air circulation and keeping foliage dry while watering plant.

  • Harvest seeds when capsules turn brown.
  • Save seed over winter in a cool, dark, dry place.