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Shrubby Boneset

Ageratina havanensis

Other common name(s):

White Mistflower, White Shrub Mistflower, Havana Snakeroot

Family:

Asteraceae (Aster Family)

Plant Ecoregion Distribution Map

Edwards Plateau, Southern Texas Plains
Balcones Canyonlands, Edwards Plateau Woodland, Llano Uplift
Northern Nueces Alluvial Plains, Semiarid Edwards Bajada

Plant Characteristics

Growth Form

Shrub

Height

3
to
5
ft.

Spread

3
to
5
ft.

Leaf Retention

Deciduous

Lifespan

Perennial

Habitat and Care Requirements

Soil Type(s)

Loam, Clay, Limestone, Well Drained

Light Requirement

Sun, Part Shade

Water Requirement

Low

Native Habitat

Grassland

Bloom and Attraction

Bloom Color

White

Bloom Season

Fall

Seasonal Interest

Seeds, Nectar, Larval Host

Wildlife Benefit

Butterflies, Birds, Hummingbirds, Moths

Maintenance

Grows in most soils. Cut back by 1/2 in winter before new growth begins, if more compact form is desired or if growing in a small space. Propagation: Seed, Semi-hardwood cuttings, Softwood cuttings,

Comments

Blooms April-December. Rounded shape bush with fragrant white blooms in fall. One of the last bloomers, often into November. Looks similar to Late Boneset (Eupatorium serotinum), but has woody stems and smaller, triangular shaped leaves. Attracts butterflies, moths and hummingbirds. Larval Host: Rawson’s Metalmark. Nectar attracts: Common Wood Nymph, Gulf Fritillary, Monarch, Queen, Red Admiral, Zebra Longwing.
Previous Scientific Name(s): Synonym(s): Eupatorium havanense, Eupatorium texense

References

1) Griffith, Bryce, Omernick & Rodgers (2007). Ecoregions of Texas. 2) https://www.wildflower.org/plants/result.php?id_plant=AGHA4. 3) https://portal.torcherbaria.org/portal/taxa/index.php?taxon=Ageratina+havanensis&formsubmit=Search+Terms. 4) http://bonap.net/TDC/Image/Map?taxonType=Species&taxonId=1979&locationType=County&mapType=Normal. 5) Miller, George O., Landscaping with Native Plants of Texas 2nd Ed., 2013, pg 52. 6) https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=36468#null, 7) Native and Adapted Landscape Plants, City of Austin and Texas A&M, 2014.

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