North America Non-native Plant

Bugle-lily

Botanical name: Watsonia

USDA symbol: WATSO

Life cycle: perennial

Habit: forb

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  

Bugle-Lily: A Striking South African Beauty for Your Garden If you’re looking to add some dramatic vertical interest to your garden, the bugle-lily (Watsonia) might just catch your eye. This South African native has made itself quite at home in certain parts of the United States, bringing tall spikes of ...

Bugle-Lily: A Striking South African Beauty for Your Garden

If you’re looking to add some dramatic vertical interest to your garden, the bugle-lily (Watsonia) might just catch your eye. This South African native has made itself quite at home in certain parts of the United States, bringing tall spikes of colorful blooms that seem to dance in the breeze.

What Exactly Is Bugle-Lily?

Bugle-lily is a perennial forb – basically a non-woody plant that comes back year after year. Think of it as a cousin to gladiolus, with similar sword-like leaves and tall flower spikes, but with its own unique personality. The tubular flowers that give it the bugle part of its name come in lovely shades of pink, orange, red, and white.

Where You’ll Find It Growing Wild

While bugle-lily originally hails from South Africa, it has established itself in California and Hawaii, where it reproduces on its own without any human help. This adaptability is part of what makes it both appealing to gardeners and something to consider carefully.

The Good, The Bad, and The Beautiful

Why you might love it:

  • Stunning tall flower spikes that make excellent cut flowers
  • Drought-tolerant once established
  • Attracts hummingbirds with its tubular blooms
  • Low-maintenance perennial
  • Adds vertical drama to garden beds

Why you might want to think twice:

  • It’s not native to North America, so it doesn’t support local ecosystems as well as native plants would
  • Can spread and naturalize in suitable climates
  • May outcompete native wildflowers in natural areas

Perfect Spots for Bugle-Lily

If you decide to grow bugle-lily, it shines in Mediterranean-style gardens, drought-tolerant landscapes, and cutting gardens. It works beautifully as an accent plant in perennial borders, where its tall spikes can provide that wow factor you’re looking for. The plant thrives in USDA hardiness zones 8-10, so gardeners in warmer climates will have the best success.

How to Grow Bugle-Lily Successfully

Growing bugle-lily isn’t rocket science, but getting the basics right will reward you with better blooms:

Planting:

  • Plant corms (bulb-like structures) in fall
  • Choose a spot with full sun
  • Ensure excellent drainage – soggy soil is bugle-lily’s enemy
  • Space corms about 6 inches apart

Care:

  • Water regularly during the growing season, then reduce watering after blooming
  • Allow foliage to die back naturally – it feeds the corms for next year
  • Divide clumps every 3-4 years to prevent overcrowding
  • Apply a balanced fertilizer in early spring

Consider Native Alternatives

While bugle-lily can be a beautiful addition to the right garden, consider exploring native alternatives that provide similar benefits while supporting local wildlife. Native plants like wild bergamot, cardinal flower, or native iris species can offer comparable beauty while being better partners for local pollinators and birds.

The Bottom Line

Bugle-lily is undeniably beautiful and relatively easy to grow in the right conditions. If you’re in zones 8-10 and want a drought-tolerant plant with spectacular flowers, it might work for your garden. Just remember to be a responsible gardener – keep it contained, don’t let it escape into natural areas, and consider native alternatives that can provide similar beauty while supporting your local ecosystem. After all, the best gardens are ones that look gorgeous AND play well with nature.

Bugle-lily

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Liliidae

Order

Liliales

Family

Iridaceae Juss. - Iris family

Genus

Watsonia Mill. - bugle-lily

Species

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