Zone Map 5-9

Growth Cycle

Growth Cycle - Cool Growth Cycle - Cool Cool
Bloom: Bloom Season Scale
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Late Spring


  • Native to North America
  • Thrives in wet areas
  • Shade Tolerant
  • Bioretention/Rain Gardens
  • Bioswales/Vegetated swales


  • Growth rate: slow-medium
  • Grow in 1, 2 or 3 gallon
  • Grow in well-drained soil
  • Water needs: keep evenly moist; likes moisture but avoid keeping too wet
  • Fertilizing: use a slow release, low-rate fertilizer
  • Possible pests: no major pests
  • Overwintering: cold frame with clear poly, keep dry

*Note: please adapt these suggestions as needed to accommodate your local conditions.


  • Unusual, light green, spiky-looking seed heads
  • Seed heads can be used in fresh or dried flower arrangements
  • Adds texture and beautiful green color to the landscape
  • Produces early green blooms that turn coffee colored and persist into fall
  • Good addition to the edges of ponds and water features
  • Good for the lower zones of biotention sites and bioswales
  • Adds dimension to decorative containers; combine it with other moisture-loving plants and keep soil moist

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