North America Native Plant

‘ekoko

Botanical name: Chamaesyce celastroides var. tomentella

USDA symbol: CHCET

Life cycle: perennial

Habit: shrub

Native status: Native to Hawaii  

Synonyms: Chamaesyce multiformis (Gaudich. ex Hook. & Arn.) Croizat & O. Deg. var. kaalana (Sherff) O. Deg. & I. Deg. (CHMUK)  âš˜  Chamaesyce multiformis (Gaudich. ex Hook. & Arn.) Croizat & O. Deg. var. perdita (Sherff) O. Deg. & I. Deg. (CHMUP)  âš˜  Chamaesyce multiformis (Gaudich. ex Hook. & Arn.) Croizat & O. Deg. var. tomentella (Boiss.) O. Deg. & I. Deg. (CHMUT)  âš˜  Euphorbia celastroides Boiss. var. tomentella (Boiss.) Oudejans (EUCET2)  âš˜  Euphorbia multiformis Gaudich. ex Hook. & Arn. var. kaalana Sherff (EUMUK)  âš˜  Euphorbia multiformis Gaudich. ex Hook. & Arn. var. perdita Sherff (EUMUP)  âš˜  Euphorbia multiformis Gaudich. ex Hook. & Arn. var. tomentella Boiss. (EUMUT)  âš˜  Euphorbia oahuensis Skottsb. (EUOA2)   

‘Ekoko: A Rare Hawaiian Native Worth Protecting in Your Garden Meet ‘ekoko (Chamaesyce celastroides var. tomentella), a charming little Hawaiian native that’s quietly making its mark in sustainable landscaping. This unassuming shrub might not win any flashy flower contests, but it’s got something far more valuable: deep island roots and ...

Rare plant alert!

Region: Conservation status by state

Status: S3TH: Status is uncertain but is somewhere between the following rankings: Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘

‘Ekoko: A Rare Hawaiian Native Worth Protecting in Your Garden

Meet ‘ekoko (Chamaesyce celastroides var. tomentella), a charming little Hawaiian native that’s quietly making its mark in sustainable landscaping. This unassuming shrub might not win any flashy flower contests, but it’s got something far more valuable: deep island roots and remarkable resilience.

What Makes ‘Ekoko Special?

‘Ekoko is a perennial shrub that’s completely native to Hawaii, meaning it evolved right alongside the islands’ unique ecosystems. This multi-stemmed woody plant typically stays under 13-16 feet tall, making it a perfect candidate for smaller landscapes and native plant gardens.

As a member of the spurge family (Euphorbiaceae), ‘ekoko has adapted beautifully to Hawaii’s diverse growing conditions. Its compact form and small leaves give it a refined, understated appearance that works wonderfully as a foundation plant or natural ground cover.

Where Does ‘Ekoko Grow?

This native beauty is found exclusively in Hawaii, where it has carved out its niche in the island’s varied landscapes. From coastal areas to inland regions, ‘ekoko has proven its adaptability across different Hawaiian environments.

Important Conservation Note

Here’s something every responsible gardener should know: ‘ekoko has a Global Conservation Status of S3TH, indicating it’s a species of conservation concern. While this makes it even more special to have in your garden, it also means you should only obtain plants from reputable, responsibly sourcing nurseries that propagate from ethically collected material. Never collect from wild populations!

Why Choose ‘Ekoko for Your Garden?

If you’re looking to create an authentic Hawaiian landscape or support native biodiversity, ‘ekoko offers several compelling benefits:

  • Completely native to Hawaii – supports local ecosystems
  • Drought-tolerant once established
  • Low-maintenance shrub perfect for busy gardeners
  • Compact size works well in smaller spaces
  • Excellent for xerophytic and rock gardens
  • Helps preserve Hawaiian plant heritage

Growing ‘Ekoko Successfully

The good news is that ‘ekoko is relatively easy to grow once you understand its preferences. This hardy native thrives in USDA zones 10-11, making it perfect for tropical and subtropical climates.

Ideal Growing Conditions:

  • Well-draining soil is absolutely essential
  • Full sun to partial shade
  • Minimal water once established
  • Avoid overwatering – this is the quickest way to lose your plant

Planting and Care Tips

When planting ‘ekoko, think less is more. These plants have evolved to handle Hawaii’s sometimes harsh conditions, so they don’t appreciate being pampered with too much water or rich soil.

Plant in spring or early fall when temperatures are moderate. Dig a hole just as deep as the root ball and twice as wide. Backfill with the existing soil – no need for amendments unless drainage is poor. Water thoroughly after planting, then back off and let the plant establish itself.

Once established, ‘ekoko requires minimal care. A light pruning to maintain shape is about all the maintenance you’ll need to provide.

The Perfect Garden Companion

‘Ekoko works beautifully in native Hawaiian plant gardens, rock gardens, and drought-tolerant landscapes. Its subtle beauty pairs well with other native Hawaiian plants, and its low water requirements make it an excellent choice for sustainable gardening.

While ‘ekoko’s flowers are small and not particularly showy, they do provide some benefit to small pollinators. The real value lies in its role as a native plant that supports the broader Hawaiian ecosystem.

A Plant Worth Preserving

By choosing to grow ‘ekoko in your garden, you’re doing more than just adding another plant – you’re participating in the preservation of Hawaii’s unique botanical heritage. Just remember to source your plants responsibly and never collect from wild populations.

This quiet little native may not demand attention with flashy blooms, but it offers something far more lasting: a connection to Hawaii’s natural history and a chance to support conservation through gardening. Now that’s worth celebrating!

‘ekoko

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

Euphorbiales

Family

Euphorbiaceae Juss. - Spurge family

Genus

Chamaesyce Gray - sandmat

Species

Chamaesyce celastroides (Boiss.) Croizat & O. Deg. - 'ekoko

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