North America Non-native Plant

Carmichaelia

Botanical name: Carmichaelia

USDA symbol: CARMI2

Native status: Not native but doesn't reproduce and persist in the wild

Carmichaelia: The Curious Leafless Wonder from New Zealand If you’re looking to add something truly unique to your garden, let me introduce you to Carmichaelia – a genus of plants that might just turn everything you know about gardening on its head. These fascinating shrubs from New Zealand have mastered ...

Carmichaelia: The Curious Leafless Wonder from New Zealand

If you’re looking to add something truly unique to your garden, let me introduce you to Carmichaelia – a genus of plants that might just turn everything you know about gardening on its head. These fascinating shrubs from New Zealand have mastered the art of photosynthesis without the fuss of traditional leaves, creating an architectural marvel that’s both conversation starter and drought-busting champion.

What Exactly Is Carmichaelia?

Carmichaelia, commonly known simply as carmichaelia, belongs to the pea family and hails exclusively from New Zealand. What makes these plants absolutely captivating is their evolutionary adaptation: they’ve essentially ditched their leaves (or reduced them to tiny scales) and instead rely on their flattened, green stems to do all the heavy lifting when it comes to photosynthesis. It’s like nature’s version of minimalist design – functional, striking, and utterly unique.

Where Do These Unusual Plants Come From?

Carmichaelia species are endemic to New Zealand, meaning you won’t find them growing naturally anywhere else on Earth. They’ve evolved in isolation on those beautiful islands, developing their distinctive characteristics over thousands of years. From coastal areas to inland regions, different species have adapted to various New Zealand environments.

Why You Might Fall in Love with Carmichaelia

There are several compelling reasons why gardeners are drawn to these unusual plants:

  • Architectural Interest: The leafless, flattened stems create striking silhouettes that look almost sculptural in the landscape
  • Drought Tolerance: Once established, these plants are remarkably water-wise
  • Unique Flowers: Despite their minimalist foliage, they produce charming purple or pink pea-like flowers
  • Conversation Starter: Guests will definitely ask about these unusual plants
  • Pollinator Friendly: The flowers attract bees and other beneficial insects

Garden Design and Landscape Role

Carmichaelia works beautifully as an accent plant where you want to create visual interest without overwhelming the space. They’re perfect for:

  • Rock gardens and xeriscaped landscapes
  • Mediterranean-style gardens
  • Coastal gardens (they handle salt spray well)
  • Modern, minimalist landscape designs
  • Container gardening for a unique focal point

Growing Conditions and Care

The good news is that Carmichaelia isn’t particularly fussy once you understand its basic needs:

Sunlight: Full sun to partial shade – they’re quite adaptable

Soil: Well-draining soil is absolutely crucial. These plants despise soggy feet and will quickly succumb to root rot if drainage is poor

Water: Moderate water while establishing, then quite drought tolerant

Climate: Generally hardy in USDA zones 8-10, though this can vary between species

Planting and Care Tips

Success with Carmichaelia comes down to getting the basics right:

  • Drainage First: If your soil doesn’t drain well, consider raised beds or containers
  • Plant in Spring: Give them a full growing season to establish before winter
  • Go Easy on Water: Once established, water deeply but infrequently
  • Minimal Fertilizer: These plants are adapted to lean soils and don’t need rich feeding
  • Frost Protection: In borderline zones, provide protection from hard frosts

Should You Plant Carmichaelia?

Carmichaelia can be a wonderful addition to the right garden, especially if you’re drawn to unusual plants and have the appropriate growing conditions. However, since these plants aren’t native to North America, you might also consider exploring native alternatives that offer similar drought tolerance and unique architecture, such as desert willow (Chilopsis linearis) or various native shrubs suited to your specific region.

If you do decide to grow Carmichaelia, source your plants from reputable nurseries and never collect from wild populations. These unique New Zealand natives deserve our respect and responsible cultivation practices.

The Bottom Line

Carmichaelia offers something truly different for adventurous gardeners willing to think outside the traditional plant box. With their sculptural stems, charming flowers, and drought-tolerant nature, they can add an exotic touch to water-wise gardens. Just remember that success lies in providing excellent drainage and not loving them to death with too much water or attention – sometimes the most interesting plants are also the most independent!

Carmichaelia

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Fabales

Family

Fabaceae Lindl. - Pea family

Genus

Carmichaelia R. Br. - carmichaelia

Species

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