North America Non-native Plant

Polyscias

Botanical name: Polyscias subcapitata

USDA symbol: POSU20

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

Polyscias: A Mysterious Member of the Aralia Family If you’ve stumbled across the name Polyscias subcapitata in your plant research, you’re probably wondering what exactly this plant is and whether it’s worth adding to your garden. Well, here’s the thing – you’re not alone in your confusion! This particular species ...

Polyscias: A Mysterious Member of the Aralia Family

If you’ve stumbled across the name Polyscias subcapitata in your plant research, you’re probably wondering what exactly this plant is and whether it’s worth adding to your garden. Well, here’s the thing – you’re not alone in your confusion! This particular species is something of an enigma in the gardening world.

What We Know (And Don’t Know)

Polyscias subcapitata belongs to the broader polyscias family, which includes many popular tropical foliage plants. However, finding reliable information about this specific species is like searching for a needle in a haystack. While the genus Polyscias contains many well-documented ornamental plants, this particular species seems to have slipped through the cracks of horticultural literature.

Geographic Distribution and Native Status

The geographic origins and native range of Polyscias subcapitata remain unclear from available sources. This lack of clear documentation makes it difficult to determine where this plant naturally occurs or its conservation status.

Should You Plant It?

Here’s where things get tricky. With so little reliable information available about Polyscias subcapitata’s growing requirements, invasive potential, or even its exact characteristics, it’s hard to give a definitive recommendation. The lack of documentation could mean:

  • It’s an extremely rare species
  • It may be a synonym for another, better-known species
  • The name might be outdated or incorrect
  • It’s simply not commonly cultivated

Better Alternatives to Consider

Instead of chasing after this elusive species, consider these well-documented polyscias alternatives that offer similar tropical appeal:

  • Polyscias fruticosa (Ming Aralia) – A popular houseplant with delicate, fernlike foliage
  • Polyscias balfouriana (Balfour Aralia) – Features attractive rounded leaves with cream edges
  • Polyscias guilfoylei (Geranium Aralia) – Known for its deeply cut, decorative leaves

If You’re Determined to Find It

Should you happen to encounter a plant labeled as Polyscias subcapitata, proceed with caution. Without clear growing guidelines or origin information, you’d essentially be experimenting. If you do decide to try growing it:

  • Treat it like other tropical polyscias species
  • Provide bright, indirect light
  • Maintain warm temperatures (65-75°F)
  • Keep soil consistently moist but not waterlogged
  • Ensure good drainage and humidity

The Bottom Line

Sometimes in gardening, mystery plants can be intriguing, but Polyscias subcapitata falls into the category of more trouble than it’s worth. With so many beautiful, well-documented plants available, your time and energy are better spent on species with proven track records and clear growing requirements. Save yourself the guesswork and choose a polyscias variety that’s guaranteed to thrive in your garden!

Remember, successful gardening is about working with plants that are well-suited to your conditions and backed by reliable growing information. When in doubt, it’s always better to choose the tried-and-true over the mysterious and uncertain.

Polyscias

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

Apiales

Family

Araliaceae Juss. - Ginseng family

Genus

Polyscias J.R. Forst. & G. Forst. - aralia

Species

Polyscias subcapitata Kaneh. - polyscias

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