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The Plant Guide

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Blue porter weed

Stachytarpheta urticifolia

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This pest-free perennial blooms best during warm months. It is strange how these small blue flowers attract butterflies more than large-blooming, showy neighbors. Blue porter weed gradually reseeds nearby for a fresh batch of new plants. Mix with other species of Stachytarpheta for a variety of leaf shapes and colors ranging from purple to coral.

Noteworthy CharacteristicsAttracts butterflies and bees; self-sows. Invasive in some areas, including Florida.

CareProvide average garden soil in full sun to partial shade.

PropagationBy seed or from stem cuttings.


  • Plant Height : 1 to 3 feet
  • Plant Width : 1 to 3 feet
  • Zones : 10, 11, 9
  • Bloom Time : Early Fall, Early Summer, Late Summer, Summer
  • Light : Full Sun to Partial Shade
  • Moisture : Medium Moisture
  • Maintenance : Moderate
  • Plant Type : Perennials
  • Plant Seasonal Interest : Summer Interest

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