North America Native Plant

Seacliff Tetramolopium

Botanical name: Tetramolopium sylvae

USDA symbol: TESY

Life cycle: perennial

Habit: shrub

Native status: Native to Hawaii  

Seacliff Tetramolopium: A Rare Hawaiian Coastal Gem Worth Protecting If you’re passionate about Hawaiian native plants and coastal gardening, you’ve probably heard whispers about some pretty special endemic species. Enter the seacliff tetramolopium (Tetramolopium sylvae), a charming little shrub that’s as rare as it is beautiful. But before you start ...

Rare plant alert!

Region: Conservation status by state

Status: S1: Status is uncertain but is somewhere between the following rankings: Critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘

Seacliff Tetramolopium: A Rare Hawaiian Coastal Gem Worth Protecting

If you’re passionate about Hawaiian native plants and coastal gardening, you’ve probably heard whispers about some pretty special endemic species. Enter the seacliff tetramolopium (Tetramolopium sylvae), a charming little shrub that’s as rare as it is beautiful. But before you start planning where to plant one, there’s something crucial you need to know about this coastal treasure.

What Makes Seacliff Tetramolopium Special?

This delightful perennial shrub is a true Hawaiian native, found nowhere else on Earth. The seacliff tetramolopium typically grows as a multi-stemmed woody plant, usually staying under 13-16 feet tall, though it often remains much more compact in garden settings. What really catches the eye are its small, white daisy-like flowers that contrast beautifully with silvery-green foliage – a perfect combination for coastal landscapes.

Where Does It Call Home?

As its name suggests, seacliff tetramolopium is naturally found clinging to the dramatic sea cliffs of Hawaii. This tough little shrub has adapted to some pretty harsh conditions – salt spray, strong winds, and rocky, well-draining soils are all part of its natural habitat.

The Conservation Reality Check

Here’s the important part: Tetramolopium sylvae has a Global Conservation Status of S1, meaning it’s critically imperiled. With typically 5 or fewer occurrences and very few remaining individuals (less than 1,000), this species is hanging on by a thread in the wild.

What does this mean for gardeners? If you’re considering adding seacliff tetramolopium to your landscape, you absolutely must ensure you’re getting responsibly sourced material. This means purchasing only from reputable native plant nurseries that propagate plants ethically, never collecting from wild populations.

Is It Right for Your Garden?

Seacliff tetramolopium can be a fantastic addition to the right garden, but it’s definitely not for everyone. Here’s what to consider:

Perfect For:

  • Coastal gardens in Hawaii (USDA zones 10-11)
  • Native Hawaiian plant collections
  • Rock gardens and xerophytic landscapes
  • Conservation-minded gardeners
  • Areas with excellent drainage

Skip It If:

  • You live outside tropical zones
  • Your garden has heavy, poorly-draining soil
  • You prefer high-maintenance, heavily watered landscapes
  • You can’t source plants responsibly

Growing Seacliff Tetramolopium Successfully

If you’ve decided this rare beauty belongs in your garden and you’ve sourced it responsibly, here’s how to keep it happy:

Location and Soil

Think coastal cliff when choosing a spot. Full sun is essential, and drainage is absolutely critical – this plant will not tolerate soggy roots. Sandy, rocky, or heavily amended soil that drains quickly is your best bet.

Watering and Maintenance

Once established, seacliff tetramolopium is quite drought-tolerant, which makes sense given its clifftop origins. Water regularly during the first year to help establishment, then back off significantly. This shrub actually prefers to dry out between waterings.

Special Considerations

While naturally salt-tolerant, protect young plants from the harshest winds until they’re well-established. The good news? Once settled in, this tough little shrub requires minimal care – just the way nature intended.

Supporting Conservation Through Gardening

By choosing to grow seacliff tetramolopium responsibly, you’re not just adding a unique plant to your landscape – you’re participating in conservation. Every garden that successfully grows this species helps preserve genetic diversity and reduces pressure on wild populations.

Plus, those delicate white flowers aren’t just pretty to look at – they provide nectar for native Hawaiian insects, making your garden a small but important habitat island.

The Bottom Line

Seacliff tetramolopium is definitely a plant for the thoughtful gardener. Its rarity means it comes with responsibility, but for those willing to source it ethically and provide the right growing conditions, it offers a unique opportunity to grow something truly special while supporting conservation efforts.

Just remember: with great plants comes great responsibility. If you can’t commit to sourcing responsibly and providing appropriate care, there are plenty of other wonderful Hawaiian natives that might be better choices for your garden. But if you’re up for the challenge, seacliff tetramolopium might just become the crown jewel of your native plant collection.

Seacliff Tetramolopium

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

Asterales

Family

Asteraceae Bercht. & J. Presl - Aster family

Genus

Tetramolopium Nees - tetramolopium

Species

Tetramolopium sylvae Lowrey - seacliff tetramolopium

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