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Butterfly bush

Butterfly bush

Buddleja davidii
An arching, multi-stemmed deciduous-to-semi-evergreen shrub grown for its long, cone-shaped summer-to-frost panicles of small, honey-scented flowers in purple, magenta, pink, or white. Native to central and western China, it is one of the most magnetic adult-butterfly NECTAR plants you can grow in a hot, sunny border. The honest catch: despite the name it hosts no native butterfly larvae, so it feeds adults but raises none - and the straight species is invasive, escaping along rivers and disturbed ground. Grow it for nectar with eyes open: deadhead it, choose a sterile cultivar, and back it with true native host plants.
Climate fit: moderate (48/100)
Pollinator
Border
Focal point
Light
Full sun
Water
Moderate water
Mature size
6-12 ft tall · 5 ft apart
Hardy in zones
5a-9b
very cold to frosty winters
Life cycle
Perennial
AHS heat range
4-11
Plant range authored in AHS heat-zone terms.
Native in Illinois
No

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Grown purely as an ornamental nectar shrub - butterfly bush has no culinary use and no part of it is eaten.

Cold hardiness

These values are location-based: this location's current hardiness is the baseline, and the 2050 value is a projected future climate for this same location.
Now
Zone 6b
Plotwright
USDA Zone 6b
-5°F to 0°F
Well-suited
Zone 7a
Plotwright
0°F to 5°F
Well-suited
In plain terms: This location has cold winters. Its winters are projected to keep warming through 2050.
✓
Well-suited today and still thriving in 2050.

Heat tolerance

Heat tolerance values are location-based too: heat days today are observed at this site, and the 2050 value projects this same location under a future climate.
Loading AHS heat-zone data for this location...

Similar plants

Browse lateral options with similar roles, light needs, size, or native-range overlap; these are not filtered for a better climate fit.
American beautyberry (Callicarpa americana) in fall, an arching stem clasped with tight whorls of glossy magenta-purple berries at the leaf axils.
Callicarpa americana
American beautyberry
American beautyberry (Callicarpa americana) is a loose, open, arching deciduous shrub of the southeastern and south-central United States, grown almost entirely for one spectacular autumn trick. Through summer it is a quiet green background plant, carrying small clusters of pink-to-lilac flowers tucked into the leaf axils. Then, from late summer into fall, those clusters ripen into tight whorls of vivid magenta-purple berries that wrap right around the stems at every leaf joint, so the arching branches look strung with beads. Songbirds strip them through fall and early winter. It is an easy, fast-growing, forgiving native that asks for little: full sun to part shade, ordinary well-drained soil, and room to arch. Site it where the fall berry show can be seen, because in leaf and flower it is plain, and in fruit it is one of the most distinctive shrubs you can grow.
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Border
Focal point
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Beauty bush (Kolkwitzia amabilis) - bell-shaped (campanulate) tubular flowers borne in dense clusters along the branch, pale-pink to white corollas with a bright yellow-orange throat marked by orange reticulate veining, abundant simultaneous bloom (flowering branch smothered in flowers) on a leafy deciduous shrub.
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A large, vigorous, fountain-shaped deciduous shrub that earns its common name in late spring, when its arching stems are smothered in masses of pale-pink, yellow-throated, bell-shaped flowers. Native to China, it is one of the great old-fashioned spring shrubs - spectacular in full bloom, much loved by bees, and offering peeling brown bark for quiet winter interest. It is also genuinely big: expect 6 to 10 feet tall and wide at maturity, so give it room rather than fighting its size with the shears. The form to seek out is the Award-winning "Pink Cloud", which carries a clearer, richer pink than the variable seed-grown species.
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A Cape honeysuckle (Tecomaria capensis) shrub with arching evergreen foliage and clusters of slender orange tubular flowers.
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Cape honeysuckle (Tecomaria capensis, Bignoniaceae) is a vigorous, evergreen scrambling shrub from southern and south-central Africa, valued for tubular orange-to-apricot flowers borne erratically across much of the year. It reaches about 6.6 to 9.8 feet tall and wide as a free-standing shrub, or can be trained much taller on a trellis or wall, and is widely used for informal hedging and as a hot-color border or container plant. It is frost-tender (RHS H1C; roughly USDA 9b-11) - in cooler climates it is grown under glass or as a summer container plant and overwintered indoors. In frost-free, mild climates it can become weedy: it has naturalised and is treated as invasive in parts of Australia and on islands such as the Azores, so site it where suckering and self-layering can be managed. It is not a recognised edible and is not flagged as notably toxic, though several plant parts feature in traditional southern-African medicine; treat it as ornamental rather than for consumption. Note the accepted binomial here is Tecomaria capensis (POWO/GBIF); the widely-seen Tecoma capensis is a synonym.
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Moderate water
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Climate: narrow
Border
Focal point
Pollinator
Structure
Container
Crimson bottlebrush (Melaleuca citrina) - a cylindrical spike of bright red flowers with long protruding stamens at the tip of a branch, with narrow lance-shaped leaves, against a blurred green background.
Melaleuca citrina
Crimson bottlebrush
Crimson bottlebrush (formerly Callistemon citrinus, and still sold and grown under that name almost everywhere) is a bold evergreen shrub native to New South Wales, Queensland, and Victoria in eastern Australia. From spring through fall - and nearly year-round in frost-free climates - it carries dense, cylindrical, crimson-red 'bottlebrush' flower spikes packed with long protruding stamens, held above narrow, lance-shaped leaves dotted with oil glands that release a distinct lemony citrus scent when bruised (the species epithet citrinus means 'related to citrus'). Left unpruned it can reach 10 to 15 feet tall and wide as a large shrub or small tree, but it is more commonly trained as a 3 to 5 feet shrub, and it tolerates hard pruning well, regenerating new growth from old wood. It wants full sun and does best in moist, fertile, well-drained soil, though it tolerates waterlogging and, once established, drought; it prefers acid soil, and its leaves can yellow in alkaline or salty ground. It is frost-tender: NC State puts its winter hardiness at only 20 to 25°F and says it needs winter protection in zone 8. USDA PLANTS lists no invasive or noxious status for it in the US, Plants For A Future gives it no weed potential, and NC State Extension lists it as non-toxic to cats, dogs, and horses - though it is grown as an ornamental, not a food crop.
Shrub
Full sun
Moderate water
Zones 8b-11b
Climate: narrow
Focal point
Pollinator
Border
Container
Viburnum plicatum 'Mariesii' in full bloom showing tiered horizontal branches laden with flat white lacecap flower heads
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Doublefile viburnum
Doublefile viburnum is a deciduous shrub native to China, Korea, Japan, and Taiwan, grown for its spectacular tiered, horizontal branching draped in flat lacecap flower heads in late spring. It earns its place as a four-season focal point - white flowers in May, blue-black drupes in late summer, and often vivid red-purple autumn colour - but the honest catch is its sheer footprint: mature plants can spread 13 to 16 feet wide with rigidly horizontal branches that resent hard pruning, and the fruit is not edible.
Shrub
Full sun / Part sun
Moderate water
Zones 5a-8b
Climate: narrow
Focal point
Structure
Border
Pollinator
Firebush (Hamelia patens): a terminal cluster of slender, tubular orange-red flowers and buds on red stalks, framed by broad, pointed green leaves with reddish midribs and bronze-red young leaves.
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Firebush
Firebush (also called scarlet bush, hummingbird bush, and Mexican firecracker) is a fast-growing, evergreen, soft-stemmed shrub in the coffee family (Rubiaceae) and a Florida native: it grows wild from central Florida south through the Florida Keys, and on through the Bahamas, the Caribbean, Mexico, and Central America into South America as far as Argentina. In a frost-free landscape it forms a dense, spreading shrub of 6 to 12 feet, occasionally to 15 feet, with whorls of oval leaves that are red-hairy when young and speckled red or purple at maturity, reddish stems, and terminal clusters of slender, tubular, orange-red flowers 0.5 to 1.5 inches long nearly all year. Hummingbirds and butterflies work the flowers, and birds eat the small berries, which ripen from red to black and are edible. It is frost-tender: a freeze can kill it to the ground, it regrows from the roots through zone 9, and farther north it is grown as a 2 to 3 feet summer annual or container plant. Buy with care, because several non-native firebushes are sold under the same name: plants labeled 'African', 'Dwarf', 'Compacta', or 'Firefly' are often Hamelia patens var. glabra, a variety from southern Mexico to northern South America with smooth leaves and mostly yellow flowers, and 'Bahama firebush' is a different species, Hamelia cuprea. Florida's native form is Hamelia patens var. patens, the plant this record describes.
Shrub
Full sun / Part shade
Moderate water
Zones 9a-11b
Climate: narrow
Pollinator
Border
Structure
Focal point
Container

Educator packet

Plant packet
Butterfly bush educator packet
An arching, multi-stemmed deciduous-to-semi-evergreen shrub grown for its long, cone-shaped summer-to-frost panicles of small, honey-scented flowers in purple, magenta, pink, or white. Native to central and western China, it is one of the most magnetic adult-butterfly NECTAR plants you can grow in a hot, sunny border. The honest catch: despite the name it hosts no native butterfly larvae, so it feeds adults but raises none - and the straight species is invasive, escaping along rivers and disturbed ground. Grow it for nectar with eyes open: deadhead it, choose a sterile cultivar, and back it with true native host plants.
Scientific name
Buddleja davidii
Plant type
shrub
Hardiness
5a-9b
Light
full-sun
Moisture
moderate
Spacing
5 ft
Classroom prompts
- Which plant traits are observations, and which are care recommendations?
- How would this plant fit change if the garden location moved warmer, colder, wetter, or drier?
- Which source-backed facts would you cite in a lesson handout?
Use the Sources & citations section below for page citation styles and the field-level source list.

Sources & citations

Cite this page
For lesson plans, articles, or research that uses this page. Use the source cards below to explore the references that informed this record.
Plotwright. (2026, May 17). Butterfly bush (Buddleja davidii). Retrieved 2026, October 9, from https://plotwright.com/plants/buddleja-davidii
Sources used for this record
This record is compiled from the sources below.
Plants of the World Online (POWO)
Botanical research database
NC State Extension Gardener Plant Toolbox
University extension service
USDA PLANTS Database
Government data source
GBIF
Botanical research database
Wikimedia Commons
Photo · CC BY-SA 4.0