North America Non-native Plant

Smokebush

Botanical name: Buddleja madagascariensis

USDA symbol: BUMA80

Life cycle: perennial

Habit: vine

Native status: Non-native, reproduces and persists in the wild in Hawaii âš˜ Non-native, reproduces and persists in the wild in the lower 48 states âš˜ Non-native, reproduces and persists in the wild in Puerto Rico  

Smokebush (Buddleja madagascariensis): A Vigorous Climbing Beauty with Considerations If you’ve been searching for a fast-growing climbing plant with eye-catching flowers, you might have come across smokebush. This vigorous perennial vine has certainly made its mark in warmer climates, but there’s more to this plant than meets the eye. Let’s ...

Smokebush (Buddleja madagascariensis): A Vigorous Climbing Beauty with Considerations

If you’ve been searching for a fast-growing climbing plant with eye-catching flowers, you might have come across smokebush. This vigorous perennial vine has certainly made its mark in warmer climates, but there’s more to this plant than meets the eye. Let’s dive into what makes Buddleja madagascariensis tick and whether it deserves a spot in your garden.

What Exactly Is Smokebush?

Smokebush, scientifically known as Buddleja madagascariensis, is a climbing perennial that’s quite the character in the plant world. True to its name, this species originally hails from Madagascar, but it has traveled far from its island home. This isn’t your typical shrubby buddleia – it’s a twining, climbing plant with relatively long stems that can be either woody or herbaceous, giving it a somewhat unpredictable personality.

Where You’ll Find It Growing

Today, smokebush has established itself in Florida, Hawaii, and Puerto Rico. However, here’s the thing that gardeners should know: this plant is non-native to these areas and has proven quite successful at reproducing on its own in the wild. It’s essentially become a naturalized resident that doesn’t need human help to spread and persist.

The Good, The Beautiful, and The Vigorous

Let’s talk about what draws people to this plant. Smokebush produces clusters of small, tubular flowers in shades of orange to yellow that can be quite spectacular when the plant is in full bloom. The silvery-green foliage provides a nice backdrop for these colorful displays, and the overall effect can be quite striking in the right setting.

The flowers aren’t just pretty to look at – they’re magnets for butterflies and other pollinators. If you’re trying to create a pollinator-friendly space, the nectar-rich blooms definitely deliver on that front.

Growing Conditions and Care

If you’re in USDA zones 9-11, smokebush will likely thrive in your climate. This plant is surprisingly adaptable when it comes to growing conditions:

  • Prefers full sun to partial shade
  • Tolerates various soil types as long as they drain well
  • Drought tolerant once established
  • Thrives in upland conditions (rarely found in wetland areas)

The plant’s vigorous climbing habit means it can quickly cover structures, fences, or other plants. While this rapid growth can be an asset if you need quick coverage, it also means you’ll need to stay on top of pruning to keep it in bounds.

The Reality Check: Should You Plant It?

Here’s where things get interesting. While smokebush can be an attractive addition to tropical and subtropical gardens, its success at naturalizing in non-native areas raises some questions. The plant has shown it can reproduce and persist without human intervention across multiple regions, which suggests it’s quite competitive in various environments.

If you’re drawn to the aesthetic appeal of smokebush, consider exploring native alternatives that can provide similar benefits without the ecological concerns. Native climbing plants and flowering vines in your area will offer comparable beauty while supporting local ecosystems and requiring less maintenance once established.

Planting and Care Tips

If you do choose to grow smokebush, here are some key considerations:

  • Provide sturdy support structures – this plant means business when it climbs
  • Plan for regular pruning sessions to maintain size and shape
  • Water regularly during establishment, then reduce frequency as the plant matures
  • Monitor its spread and remove any unwanted seedlings promptly
  • Consider container growing to better control its expansion

The Bottom Line

Smokebush is undeniably attractive and relatively easy to grow in suitable climates. However, its track record of establishing itself in non-native environments means responsible gardening practices are essential if you choose to grow it. Before planting, research native alternatives that might give you similar aesthetic results while supporting your local ecosystem.

Remember, the best garden choices are often those that work harmoniously with nature rather than against it. Whether you choose smokebush or explore native options, the key is creating a beautiful space that you can enjoy while being mindful of the broader environmental picture.

Wetland Status

The rule of seasoned gardeners and landscapers is to choose the "right plant for the right place" matching plants to their ideal growing conditions, so they'll thrive with less work and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection is. While tags list watering requirements, there's more to the story.

Knowing a plant's wetland status can simplify the process by revealing the interaction between plants, water, and soil. Surprisingly, many popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. Also, it helps you make smarter gardening choices and grow healthy plants with less care and feeding, saving you time, frustration, and money while producing an attractive garden with greater ecological benefits.

Regions
Status
Moisture Conditions

Atlantic and Gulf Coastal Plain

UPL

Obligate Upland - Plants with this status almost never occurs in wetlands

Caribbean

UPL

Obligate Upland - Plants with this status almost never occurs in wetlands

Hawaii

FACU

Facultative Upland - Plants with this status usually occurs in non-wetlands but may occur in wetlands

Smokebush

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Scrophulariales

Family

Buddlejaceae K. Wilh. - Butterfly-bush family

Genus

Buddleja L. - butterflybush

Species

Buddleja madagascariensis Lam. - smokebush

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA