North America Native Plant

Pseuderanthemum

Botanical name: Pseuderanthemum inclusum

USDA symbol: PSIN11

Life cycle: perennial

Habit: subshrub

Native status: Native to Pacific Basin excluding Hawaii  

Pseuderanthemum: A Tropical Native Perfect for Pacific Gardens If you’re gardening in the tropical Pacific and looking for authentic native plants, let me introduce you to pseuderanthemum (Pseuderanthemum inclusum). This charming perennial herb might not be the flashiest plant in your garden center, but it’s got something special going for ...

Pseuderanthemum: A Tropical Native Perfect for Pacific Gardens

If you’re gardening in the tropical Pacific and looking for authentic native plants, let me introduce you to pseuderanthemum (Pseuderanthemum inclusum). This charming perennial herb might not be the flashiest plant in your garden center, but it’s got something special going for it – it’s genuinely native to the Pacific Basin, specifically thriving in places like Guam and Palau.

What Makes Pseuderanthemum Special?

Pseuderanthemum inclusum is what botanists call a forb herb – basically, it’s a flowering plant that stays soft and green rather than developing woody stems like shrubs or trees. Think of it as nature’s way of creating a low-maintenance perennial that keeps coming back year after year without getting too big for its britches.

As a native species, this plant has spent centuries adapting to local conditions, which means it’s naturally suited to work with your local ecosystem rather than against it.

Where Does It Call Home?

This tropical native has made its home across the Pacific Basin, with confirmed populations in Guam and Palau. It’s perfectly adapted to the warm, humid conditions of these Pacific islands, which gives us some pretty good clues about what it needs to thrive in cultivation.

Why Consider Growing Pseuderanthemum?

Here’s the thing about native plants – they’re like that reliable friend who just gets you. Pseuderanthemum inclusum offers several compelling reasons to earn a spot in your garden:

  • Authentic regional character: You’re growing something that truly belongs in your landscape
  • Low-maintenance nature: Native plants typically require less water, fertilizer, and pest control
  • Ecosystem support: Native species often provide better habitat and food sources for local wildlife
  • Climate resilience: Already adapted to local weather patterns and seasonal changes

Growing Conditions and Care

Based on its native range, pseuderanthemum thrives in tropical conditions. If you’re lucky enough to garden in USDA zones 10-12, you’re in the sweet spot for growing this Pacific native. Here’s what it likely prefers:

  • Climate: Warm, humid tropical conditions year-round
  • Temperature: Consistent warmth with no frost tolerance
  • Humidity: High humidity levels typical of tropical islands
  • Protection: May benefit from some shelter from harsh winds

The Honest Truth About Growing Pseuderanthemum

I’ll be straight with you – detailed growing information for Pseuderanthemum inclusum specifically is pretty scarce in the gardening world. This often happens with native species that haven’t made it into mainstream horticulture yet. But don’t let that discourage you!

If you’re interested in growing this Pacific native, your best bet is to:

  • Connect with local native plant societies in Guam, Palau, or other Pacific regions
  • Reach out to botanical gardens or universities in the Pacific Basin
  • Look for specialized native plant nurseries that focus on Pacific Island species
  • Consider it as part of a broader native plant garden focused on Pacific Basin species

The Bottom Line

Pseuderanthemum inclusum might not be the easiest plant to find or the most documented species to grow, but it represents something valuable – authentic native heritage for Pacific gardens. If you’re passionate about growing truly local plants and supporting regional biodiversity, this quiet little perennial herb deserves consideration.

Just remember, successful native gardening often means thinking beyond individual plants to creating entire ecosystems. Pseuderanthemum inclusum would likely thrive best as part of a thoughtfully planned native Pacific plant community, surrounded by other species that share its natural habitat requirements.

Sometimes the most rewarding gardening adventures start with the plants that don’t have glossy seed packet photos – they’re the ones that connect us most authentically to the places we call home.

Pseuderanthemum

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

Scrophulariales

Family

Acanthaceae Juss. - Acanthus family

Genus

Pseuderanthemum Radlk. - pseuderanthemum

Species

Pseuderanthemum inclusum Hosok. - pseuderanthemum

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