Hardy Ageratum (Blue Mistflower)
Eupatorium coelistinum
Plant Details
USDA Plant Hardiness Zones: 5a-10b Find Your Zone
Plant Type: Herbaceous Perennial (Native)
Height at Maturity: 3-3.5′
Width at Maturity: 2′
Spacing: 18-24″ for mass planting
Spacing: 18-24″ for mass planting
Growth Habit / Form: Upright
Growth Rate: Fast
Flower Color: Violet Blue
Flower Size: 3-4″ diameter clusters
Flowering Period: June/July to September
Flower Type: single
Fragrant Flowers: No
Foliage Color: Green leaves and dark purple-red stems
Fragrant Foliage: No
Berries: No
Berry Color: No
Sun Needs: Full Sun to Part Shade
Water Needs: Average to Wet, consistently moist
Soil Type: Clay (Amended), Loam, Sand (Amended), Silt
Soil Moisture / Drainage: Consistently Moist to Wet
Soil pH: 5.5 – 8.5 (Acid to Alkaline)
Maintenance / Care: Low
Attracts: Visual Attention, Butterflies, Pollinators
Resistances: Deer, Disease, Insect, Wet Soil, Rabbits
Description
A long time favorite in our gardens and one the butterflies and pollinators will thank you for planting, Hardy Ageratum is a North American native perennial plant that will provide beautiful late-season color in the garden. Abundant, bright violet-blue flowers massed in flat clusters atop every stem glow in our north central Georgia gardens from September until the first frost in late October or early November. The flowers are perfect for cutting and use in indoor flower arrangements. Excellent for naturalizing along sunny to partially shaded woodland borders, in wild flower gardens, or the periphery of stream of pond.
Landscape & Garden Uses
Growing 3 to 3.5 feet tall and spreading 2 feet or more, Hardy Ageratum excellent for naturalizing along sunny to partially shaded woodland borders, in wild flower gardens, or the periphery of stream of pond.
Suggested Spacing: 24 to 36 inches apart
Growing Preferences
Hardy Ageratum is very easy to grow in most any average, medium to wet, well-drained soils in full sun to part shade. It prefers consistently moist, fertile, humusy soils. Plants spread rhizomes and self-seeding to form colonies. Taller plants may be cut back in mid summer to control height.
Plant Long & Prosper!
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I ordered this plant from two different sources and the one from Wilson’s was far better than the blue mist flower from the other source.——————————————-We are so glad you are pleased and we hope you enjoy it for years to come! Thanks for the kind words and great review! 🙂 Beth Steele | WBG


























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