Native Plants

Hawai’i Alectryon

Alectryon macrococcus var. auwahiensis

USDA symbol: ALMAA

perennial tree

Hawaii: native

If you’re passionate about native Hawaiian plants and conservation gardening, the Hawai’i alectryon (Alectryon macrococcus var. auwahiensis) might just capture your heart. This endemic Hawaiian tree is more than just a beautiful addition to your landscape—it’s a living piece of Hawaii’s natural heritage that desperately needs our help to survive. ...

Hawai’i Alectryon may be listed as rare in your area.
Global Conservation Status

Status: S1T1 | Critically imperiled: Extremely rare. Typically 5 or fewer occurrences or under 1,000 remaining individuals.

Hawai’i Alectryon: A Rare Hawaiian Treasure for Your Native Garden

If you’re passionate about native Hawaiian plants and conservation gardening, the Hawai’i alectryon (Alectryon macrococcus var. auwahiensis) might just capture your heart. This endemic Hawaiian tree is more than just a beautiful addition to your landscape—it’s a living piece of Hawaii’s natural heritage that desperately needs our help to survive.

What Makes This Plant Special?

The Hawai’i alectryon is a perennial tree that typically grows 13-16 feet tall, though it can reach greater heights under ideal conditions. As a member of Hawaii’s exclusive native plant family, this woody beauty has evolved specifically in Hawaiian conditions over thousands of years, making it perfectly adapted to island life.

This tree is found exclusively in Hawaii, making it a true endemic treasure. Unfortunately, its Global Conservation Status of S1T1 means it’s critically rare and needs immediate conservation attention.

  • Species observed
  • No observations

Important Conservation Note

Before you get too excited about planting this rare beauty, here’s the crucial part: Due to its critically endangered status, you should only plant Hawai’i alectryon if you can source it responsibly from authorized native plant nurseries or conservation programs. Never collect seeds or plants from wild populations, as this could further harm already struggling native stands.

Why Choose Hawai’i Alectryon for Your Garden?

Despite its rarity challenges, there are compelling reasons to include this plant in your native Hawaiian landscape:

  • Supports native ecosystem restoration
  • Provides habitat and food for native Hawaiian wildlife
  • Demonstrates your commitment to conservation
  • Offers unique aesthetic appeal with its compound leaves and colorful fruits
  • Connects your garden to Hawaii’s natural heritage

Perfect Growing Conditions

Like many Hawaiian natives, the Hawai’i alectryon appreciates conditions that mimic its natural habitat:

  • Climate: USDA hardiness zones 10-11 (tropical conditions)
  • Sunlight: Full sun to partial shade
  • Soil: Well-draining soil is essential—soggy roots spell trouble
  • Water: Drought-tolerant once established, but appreciates occasional deep watering
  • Wind protection: Shield from strong trade winds when young

Planting and Care Tips

Successfully growing this rare native requires attention to detail:

  • Plant in well-draining soil—consider raised beds if your soil tends to stay wet
  • Water regularly during establishment (first 1-2 years), then reduce frequency
  • Mulch around the base to retain moisture and suppress weeds
  • Protect young trees from strong winds with stakes or windbreaks
  • Avoid over-fertilizing, as native plants often prefer lean soils
  • Be patient—native trees often grow slowly but live long lives

Garden Design Ideas

The Hawai’i alectryon works beautifully in:

  • Native Hawaiian plant collections
  • Conservation-focused landscapes
  • Drought-tolerant garden designs
  • Educational or demonstration gardens
  • Specimen plantings where its unique form can be appreciated

Supporting Conservation Through Gardening

By choosing to grow rare native plants like the Hawai’i alectryon, you’re joining an important conservation movement. Your garden becomes a refuge for Hawaii’s endangered flora and a seed bank for future restoration efforts. Just remember—always source your plants responsibly and never collect from the wild.

While we don’t have complete information about this plant’s specific wildlife benefits or wetland preferences, we do know that native Hawaiian plants generally support native ecosystems in ways that non-native species simply cannot match.

Consider connecting with local native plant societies, botanical gardens, or conservation organizations to learn more about responsible sourcing and to support ongoing conservation efforts for this remarkable Hawaiian endemic.

Classification

Group: Dicot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicotyledons
Subclass: Rosidae
Order: Sapindales
Family: Sapindaceae Juss. - Soapberry family
Genus: Alectryon Gaertn. - alectryon

Species: Alectryon macrococcus Radlk. - Hawai'i alectryon

Variety: Alectryon macrococcus Radlk. var. auwahiensis G. Linney - Hawai'i alectryon

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