Parthenium integrifolium

Parthenium integrifolium

$14.95

Parthenium integrifolium is a resilient native perennial with broad textured foliage and clusters of small white flowers held on sturdy branching stems throughout summer. Its upright form adds structure to naturalistic plantings while providing valuable late season nectar and pollen resources for a variety of pollinators.

Height & Spread: 24 - 48 in x 18 - 24 in

Bloom Time: Early to late summer

Light Requirements: Full sun to part shade

Soil Preference: Average well drained soil

Watering Needs: Low; drought tolerant once established

Deer Resistance: Deer resistant

Native Status

This species is native to much of the eastern and central United States where it occurs naturally in prairies, open woodlands, and meadow habitats. It is valued in native landscapes for its adaptability, upright structure, and ecological benefits.

WILDLIFE & INSECTS

Bees

  • Highly attractive to native bees, bumblebees, and honeybees which visit the many small flowers for nectar and pollen throughout the summer.

Butterflies

  • Provides a reliable nectar source for butterflies including Swallowtails, Painted Ladies, and skippers during its long bloom period.

Birds

  • Produces seeds that can provide a food source for songbirds while adding seasonal habitat value in native plantings.

Spacing & Landscape Use

Spacing Recommendations

  • Space 18 - 24 in apart to allow its upright clumping habit and branching flower stems to develop fully.

Landscape Placement

  • Ideal for native gardens, prairie plantings, pollinator borders, and mixed perennial beds where its tall structure adds contrast among shorter flowering plants.

Companion Plants

  • Schizachyrium scoparium (Little Bluestem) - Adds fine textured grass foliage and seasonal color that complements the upright form.
  • Echinacea purpurea (Purple Coneflower) - Provides bold summer flowers and overlapping pollinator value in sunny native plantings.
  • Pycnanthemum tenuifolium (Slender Mountain Mint) - Adds airy white flowers and strong pollinator appeal alongside the sturdy structure.
  • Rudbeckia fulgida 'Goldsturm' (Black Eyed Susan) - Brings bright yellow blooms that create a strong color contrast during summer.
  • Penstemon digitalis (Foxglove Beardtongue) - Offers upright flower spikes that pair well with its architectural habit.

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