North America Non-native Plant

Resin Cheesewood

Botanical name: Pittosporum resiniferum

USDA symbol: PIRE8

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

Resin Cheesewood: A Mysterious Member of the Pittosporum Family If you’ve stumbled across the name resin cheesewood (Pittosporum resiniferum) in your gardening research, you might be wondering what this mysterious plant is all about. Well, you’re not alone! This particular species is something of an enigma in the gardening world, ...

Resin Cheesewood: A Mysterious Member of the Pittosporum Family

If you’ve stumbled across the name resin cheesewood (Pittosporum resiniferum) in your gardening research, you might be wondering what this mysterious plant is all about. Well, you’re not alone! This particular species is something of an enigma in the gardening world, with limited information readily available to home gardeners and plant enthusiasts.

What We Know About Resin Cheesewood

Resin cheesewood belongs to the Pittosporum genus, a group of plants known for their attractive evergreen foliage and often fragrant flowers. The name cheesewood comes from the distinctive smell that some Pittosporum species emit when their wood or leaves are crushed – though whether our mysterious resin cheesewood shares this characteristic remains unclear.

The resin part of its common name suggests this plant may produce some form of resinous substance, which would be consistent with some other members of the Pittosporum family.

The Information Gap

Here’s where things get interesting (and a bit frustrating for curious gardeners): detailed information about Pittosporum resiniferum’s native range, growing requirements, and garden performance is surprisingly scarce. This could mean several things:

  • It might be a relatively rare or localized species
  • It could be known primarily in scientific circles rather than horticultural ones
  • The species might be confused with or synonymous with another Pittosporum variety

Should You Grow Resin Cheesewood?

Without clear information about its growing requirements, hardiness zones, or potential invasive tendencies, it’s difficult to make a definitive recommendation about growing Pittosporum resiniferum. If you’re considering this plant, here’s what we suggest:

  • Consult with local botanical gardens or native plant societies for regional expertise
  • Contact university extension services in your area
  • Consider well-documented native alternatives from your region instead

Better-Known Pittosporum Alternatives

While we wait for more information about resin cheesewood to surface, you might consider other Pittosporum species that are better understood and more readily available. Many gardeners love these plants for their glossy leaves, compact growth habits, and low-maintenance nature.

However, remember that the best choice for any garden is usually a plant native to your specific region, as these will support local wildlife and require fewer resources to thrive.

The Bottom Line

Resin cheesewood remains something of a botanical mystery for home gardeners. While this might frustrate those of us who love to dive deep into plant details, it also highlights the importance of choosing well-documented plants for our gardens – especially native species that we know will thrive and support local ecosystems.

If you do encounter Pittosporum resiniferum in the wild or at a specialty nursery, consider it an opportunity to contribute to botanical knowledge by observing and documenting its characteristics. Who knows? You might help solve the mystery of this elusive cheesewood!

Resin Cheesewood

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

Rosales

Family

Pittosporaceae R. Br. - Pittosporum family

Genus

Pittosporum Banks ex Sol. - cheesewood

Species

Pittosporum resiniferum Hemsl. - resin cheesewood

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