Shrub•USDA: AGHA4•PLANTED: SPRING 2025•
White Mistflower
Ageratina havanensis
FAMILY: Asteraceae (Aster Family)ALSO KNOWN AS:
White Shrub MistflowerHavana SnakerootShrubby Boneset
A vital larval host plant for Central Texas butterflies including Rawson's Metalmark and Bordered Patch, White Mistflower (Ageratina havanensis) is a semi-evergreen Texas shrub native across the Edwards Plateau and Southern Texas Plains. Leaves often persist through winter.
During Spring, Summer, and Fall, the plant produces delightfully fragrant, white blooms. Flowering is followed by ornamental fruit is a cypsela (pl. cypselae). though technically incorrect, the fruit is often referred to as an achene that add seasonal interest.
It plays a key ecological role as a larval host plant for Central Texas butterflies, including Rawson's Metalmark and Bordered Patch. Attracts hummingbirds, moths & butterflies. Butterflies and moths love the upright, fuzzy blooms.
Thriving in clay, dry, gravelly, limestone, loam, sand, and well drained, White Mistflower demonstrates outstanding hardiness once established. It requires minimal supplemental water and tolerates dry spells with ease. It offers moderate deer resistance.

White Mistflower
Ageratina havanensis
NATIVE RANGE // EPA & NPSOT
Texas Native Ecoregions7 REGIONS
[ INITIALIZING GEOSPATIAL MAP DATA... ]
Edwards Plateau, Southern Texas Plains
SOURCE: US EPA L3/L4 ECOREGIONS • NPSOT VERIFIED30.1727° N, 98.0873° W (DRIPPING SPRINGS, TX)
GROWTH & VISUAL PROFILEPerennial • Shrub
↕HEIGHT
3 ft.
↔SPREAD
3 ft.
🌱GROWTH
Fast
🌿FOLIAGE
Semi Evergreen
BLOOM COLOR
White
BLOOM CALENDARSpring, Summer, Fall (9 MO)
JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC
BOTANICAL ALIASES & ALTERNATE NAMES3 ALIASES
White Shrub MistflowerHavana SnakerootShrubby Boneset
ECOLOGICAL ROLE & WILDLIFE
🦋 CENTRAL TEXAS LARVAL HOST PLANT
Larval food plant for: Rawson's Metalmark, Bordered Patch
ATTRACTS & SUPPORTS
Larval Host: Bordered PatchLarval Host: Rawson's MetalmarkBirdsButterfliesHummingbirdsMoths
Larval host plant for Central Texas butterflies: Rawson's Metalmark and Bordered Patch. Verified online via Texas Entomology (Mike Quinn), Lady Bird Johnson Wildflower Center. Verified via Texas Entomology (Mike Quinn, texasento.net) and Lady Bird Johnson Wildflower Center (wildflower.org).
WATER NEEDLow (Drought Tolerant)
VL
LOW
MOD
HIGH
SOLAR NEEDSun, Part Shade
SHADE
PART SHADE
PART SUN
FULL SUN
SUBSTRATE & SOILpH: Neutral to Alkaline
ClayDryGravellyLimestoneLoamSandWell Drained
⚠️ BOTANICAL SAFETY NOTICE
Non-toxic to humans, birds, and domestic animals.
MAINTENANCE & PROPAGATION
Low maintenance once established.