Mist Flower (Hardy Ageratum, Boneset)
Conoclinium coelestinum (formerly Eupatorium coelestinum) ASTERACEAE (COMPOSITAE).
Planting and Growing Mist Flower
You’ll find everything you need to know to plant and grow mist flower in the accompanying table’s tabs:
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- Flowers, foliage, and root structure of mist flower
- Plant hardiness and growing conditions for mist flower
- Season of bloom and planting time for mist flower
- When, how deep, and where to plant mist flower
- How to plant mist flower
- Watering, fertilizing, care, and pests or diseases of mist flower
- Landscape and container uses of mist flower
- Comments about mist flower and its features
Growing Mist Flower
Several cultivars of mounding, shrublike, rhizomatous, deciduous perennial herbs, to 3 ft. (90 cm) tall. Opposite or clustered, sometimes hairy, light green, triangular to oval, toothed, coarse leaves, to 3 in. (75 mm) long.
See also Joe-Pye Weed, Eupatorium purpureum, a closely related species with similar care needs.
Planting and Care Guide
Blooms
Showy, blue, purple, violet, white, yellow, open, flat- or dome-shaped, fluffy, tubular, fuzzy flowers, 1/2‑in. (12‑mm) wide, in dense clusters, in summer–autumn.
Best Climates
Semi-hardy. Plant as annual, zones 3–5; ground hardy, zones 6–10.
Soil Type and Fertility
Moist, well-drained, sandy loam. Fertility: Average. 6.5–7.5 pH.
Where and How to Plant
Spring in full sun to partial shade, 1 ft. (30 cm) apart.
Proper Care
Easy. Keep moist until established; allow soil surface to dry between waterings. Pinch to shape. Propagate by cuttings, division, seed.
About This Plant
Good choice for accents, borders, edgings, fencelines in meadow, natural, rock, wildlife gardens. Attracts birds. Disease resistant. Aphid susceptible.