Native Plants

Kona Cheesewood

Pittosporum hosmeri

USDA symbol: PIHO

perennial tree

Hawaii: native

If you’re passionate about Hawaiian native plants and conservation gardening, meet Kona cheesewood (Pittosporum hosmeri) – a charming endemic tree that deserves a special place in your landscape and your heart. This lesser-known gem is more than just a pretty face; it’s a living piece of Hawaii’s natural heritage that ...

Kona Cheesewood may be listed as rare in your area.
Global Conservation Status

Status: S2S3 | Vulnerable: Found only in a restricted range (even if abundant at some locations). Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals.

Kona Cheesewood: A Rare Hawaiian Native Worth Protecting in Your Garden

If you’re passionate about Hawaiian native plants and conservation gardening, meet Kona cheesewood (Pittosporum hosmeri) – a charming endemic tree that deserves a special place in your landscape and your heart. This lesser-known gem is more than just a pretty face; it’s a living piece of Hawaii’s natural heritage that needs our help to thrive.

What Makes Kona Cheesewood Special?

Kona cheesewood is a perennial tree that typically grows as a single-stemmed woody plant, reaching heights of 13-16 feet or more under ideal conditions. True to its name, this species is endemic to Hawaii’s Big Island, particularly the Kona region, making it a genuine piece of Hawaiian biodiversity you won’t find growing wild anywhere else on Earth.

The tree features glossy, leathery leaves and produces small, fragrant flowers that add subtle beauty to any landscape. While it may not be the showiest plant in your garden, its understated elegance and cultural significance more than make up for its modest appearance.

Where Does It Grow?

Kona cheesewood is found exclusively in Hawaii, where it has adapted to the unique volcanic soils and tropical climate of the islands. This endemic species represents the incredible biodiversity that makes Hawaiian flora so special and irreplaceable.

  • Species observed
  • No observations

A Word of Caution: This Plant Needs Our Protection

Here’s something important every gardener should know: Kona cheesewood has a Global Conservation Status of S2S3, meaning it’s considered rare and potentially vulnerable. This isn’t just another pretty plant – it’s a species that needs our conservation efforts to survive and thrive for future generations.

If you’re interested in growing Kona cheesewood, please only source it from reputable native plant nurseries that use responsibly collected seeds or ethically propagated material. Never collect from wild populations, as this could harm already fragile natural communities.

Growing Kona Cheesewood Successfully

Ready to give this rare beauty a home in your garden? Here’s what you need to know:

Ideal Growing Conditions

  • Climate: USDA hardiness zones 10-11 (tropical conditions)
  • Light: Partial shade to full sun
  • Soil: Well-draining soils, adapted to volcanic conditions
  • Water: Moderate water needs once established

Planting and Care Tips

  • Choose a location with good drainage to prevent root rot
  • Mulch around the base to retain moisture and suppress weeds
  • Water regularly during establishment, then reduce frequency
  • Minimal pruning required – let it grow naturally
  • Protect young plants from strong winds

Perfect for Conservation Landscaping

Kona cheesewood shines brightest in native Hawaiian gardens and conservation landscapes. It’s an excellent choice for:

  • Native plant restoration projects
  • Educational gardens showcasing Hawaiian biodiversity
  • Erosion control on slopes
  • Creating habitat for native Hawaiian wildlife
  • Specimen planting where space allows

Supporting Native Pollinators

While small, the flowers of Kona cheesewood play an important role in supporting Hawaii’s native insects and other pollinators. By planting this species, you’re contributing to a web of native relationships that have evolved over thousands of years.

Should You Plant Kona Cheesewood?

If you live in a suitable tropical climate and can source this plant responsibly, absolutely! Growing Kona cheesewood is more than gardening – it’s conservation in action. Every plant grown in cultivation helps preserve genetic diversity and reduces pressure on wild populations.

However, remember that this isn’t a plant for casual gardening. It requires specific growing conditions and, most importantly, must be sourced ethically. If you can’t find responsibly sourced Kona cheesewood, consider other native Hawaiian plants that might be more readily available from conservation nurseries.

By choosing to grow rare native plants like Kona cheesewood, you become part of a vital conservation effort, helping ensure that future generations can enjoy Hawaii’s incredible natural heritage. Now that’s what we call gardening with purpose!

Pittosporum hosmeri is also known as...

Often we refer to plants by their common names. When shopping for plants the scientific name is the best way to positively identify the plant species you desire. But some plants have more than one name! While it doesn't happen often, nurseries might display one name while you're searching for another. Pittosporum hosmeri is also known as:

Pittosporum amplectens | USDA symbol: PIAM3
Pittosporum hosmeri Rock var. longifolium | USDA symbol: PIHOL
Pittosporum hosmeri Rock var. st.-johnii | USDA symbol: PIHOS

Why do some plants have more than one name? Over time plant species may be renamed for a few reasons:

  1. Botanists in different regions named the same plant without knowing it had already been classified.
  2. A species was reclassified after scientific advances in, for example, DNA analysis.
  3. Slight variations within a species are sometimes mistakenly identified as entirely new species.

Classification

Group: Dicot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicotyledons
Subclass: Rosidae
Order: Rosales
Family: Pittosporaceae R. Br. - Pittosporum family
Genus: Pittosporum Banks ex Sol. - cheesewood

Species: Pittosporum hosmeri Rock - Kona cheesewood

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