Leaf retention: Evergreen but dies to ground in freezes.
Growth rate: Moderate to fast.
Mature Size: 2' high and 2-4' wide.
Flowers: Vivid purple, tiny, in hemispherical clusters.
Bloom: Spring and summer.
Fruit: Seed in flowerheads.
Leaves: Dark green, toothed, pointed, rough surface.
Stems: No thorns.
Roots: Spreads by rhizomes, 1/4" tubers.
Wildlife: Attracts butterflies, bees.
Toxic / Danger: No.
Origin: South America. Naturalized in southeastern
Cultivation and Uses
USDA hardiness zones: 7-10.
Heat tolerant: Needs part shade in the desert southwest.
Drought tolerant: Yes.
Sun: Part shade.
Water after becoming established: Once or twice a month.
Soil: Tolerant, well drained preferred, pH 6.1-7.5
(slightly acidic to slightly alkaline).
Prune: If it looks raggedy, cut to ground and it will regrow
quickly. Cut to ground yearly in late fall.
Propagation: Seed, cuttings.
Uses: Ornamental, groundcover, erosion control.
Can be invasive in moist, temperate climates.
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