North America Non-native Plant

Butterflybush

Botanical name: Buddleja

USDA symbol: BUDDL2

Life cycle: perennial

Habit: vine

Native status: Non-native, reproduces and persists in the wild in Canada âš˜ Non-native, reproduces and persists in the wild in Hawaii âš˜ It's either native or not native in the lower 48 states âš˜ Non-native, reproduces and persists in the wild in Puerto Rico  

Butterflybush: The Pollinator Magnet That’s Taken Root Across America If you’ve ever wondered what that fragrant, cone-shaped flower cluster buzzing with butterflies is in your neighbor’s yard, chances are you’re looking at a butterflybush (Buddleja). This popular shrub has become a fixture in American gardens, though its story is more ...

Butterflybush: The Pollinator Magnet That’s Taken Root Across America

If you’ve ever wondered what that fragrant, cone-shaped flower cluster buzzing with butterflies is in your neighbor’s yard, chances are you’re looking at a butterflybush (Buddleja). This popular shrub has become a fixture in American gardens, though its story is more complex than you might expect.

What Exactly Is Butterflybush?

Butterflybush is a perennial shrub that typically grows as a multi-stemmed woody plant, usually staying under 13-16 feet tall. Most garden varieties are much smaller, making them perfect for residential landscapes. True to its name, this plant is absolutely irresistible to butterflies – and that’s both its greatest selling point and part of its complicated reputation.

Where Did It Come From?

Here’s where things get interesting: butterflybush isn’t actually native to North America. This plant originally hails from Asia and Africa, but it has thoroughly made itself at home across the continent. You’ll find established populations throughout much of the United States, from Alabama to Washington, and even in British Columbia, Hawaii, and Puerto Rico.

The plant’s ability to thrive in so many different climates speaks to its adaptability – which is both a blessing and a potential concern for native plant enthusiasts.

Why Gardeners Love Butterflybush

Despite its non-native status, butterflybush has won over countless gardeners for several compelling reasons:

  • Butterfly magnet: Few plants attract butterflies as reliably as butterflybush
  • Long blooming season: Flowers from summer through fall
  • Fragrant blooms: Sweet-scented flower clusters in purple, white, pink, or yellow
  • Low maintenance: Drought tolerant once established
  • Fast growing: Provides quick results in new gardens

Growing Butterflybush Successfully

If you decide to grow butterflybush, you’ll be pleased to know it’s refreshingly easy to please. This shrub thrives in full sun and well-drained soil, making it perfect for those sunny spots where other plants might struggle.

Planting and Care Tips

  • Location: Choose a sunny spot with good drainage
  • Soil: Adaptable to most soil types, but drainage is key
  • Watering: Water regularly the first year, then it’s quite drought tolerant
  • Pruning: Cut back hard in late winter or early spring to encourage vigorous growth
  • Deadheading: Remove spent blooms to encourage continuous flowering

The Native Alternative Conversation

While butterflybush certainly delivers on its promise to attract pollinators, many gardeners are increasingly interested in supporting native wildlife with native plants. If you’re leaning toward native alternatives, consider these butterfly-friendly options:

  • Native azaleas for similar shrub structure
  • Spicebush for woodland areas
  • Native viburnums for wildlife value
  • Joe Pye weed for late-season butterfly nectar

Making the Right Choice for Your Garden

Butterflybush occupies an interesting middle ground in the gardening world. It’s not native, but it’s not officially classified as invasive in most areas either. It genuinely provides nectar for pollinators and brings joy to gardeners who love watching butterfly activity.

The key is being a responsible gardener. If you choose to grow butterflybush, consider deadheading spent blooms to prevent excessive self-seeding, and perhaps balance it with native plants that provide even more comprehensive wildlife benefits.

Whether you’re drawn to its reliable butterfly-attracting power or you prefer to stick with native alternatives, the most important thing is creating a garden that brings you joy while supporting the natural world around you. After all, any garden that gets people excited about pollinators is a step in the right direction!

Butterflybush

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

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