North America Non-native Plant

Clappertonia

Botanical name: Clappertonia polyandra

USDA symbol: CLPO8

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

Synonyms: Cephalonema polyandrum K. Schum. ex Sprague (CEPO6)   

Clappertonia: A Unique Tropical Tree for Warm Climate Gardens If you’re looking to add something truly unusual to your tropical garden, meet clappertonia (Clappertonia polyandra) – a distinctive small tree that’s bound to spark conversations among fellow plant enthusiasts. This African native brings an exotic touch to warm climate landscapes, ...

Clappertonia: A Unique Tropical Tree for Warm Climate Gardens

If you’re looking to add something truly unusual to your tropical garden, meet clappertonia (Clappertonia polyandra) – a distinctive small tree that’s bound to spark conversations among fellow plant enthusiasts. This African native brings an exotic touch to warm climate landscapes, though it’s definitely not a plant for everyone or every garden.

What Is Clappertonia?

Clappertonia is a small to medium-sized tree belonging to the mallow family, native to the tropical regions of West and Central Africa. You might also see it listed under its botanical synonym, Cephalonema polyandrum, in older references. Despite its exotic origins, this interesting specimen has found its way into botanical collections and specialty tropical gardens around the world.

Where Does Clappertonia Come From?

This tropical beauty calls the humid forests of West and Central Africa home, where it thrives in the warm, consistently moist conditions of its native habitat. From Ghana to Cameroon, clappertonia grows naturally in forest understories and clearings, giving us clues about what it needs to flourish in cultivation.

What Does Clappertonia Look Like?

Clappertonia is quite the charmer with its distinctive heart-shaped leaves that create an attractive, tropical canopy. The small, yellowish flowers may not be showstoppers from a distance, but they add delicate interest up close and attract various small pollinators. As a small tree, it typically reaches heights that won’t overwhelm smaller garden spaces, making it a manageable choice for tropical landscape design.

Should You Grow Clappertonia in Your Garden?

Here’s where things get a bit tricky. Clappertonia is definitely not suited for most North American gardens – it’s only hardy in USDA zones 10-12, which means it can only survive outdoors year-round in the warmest parts of Florida, Hawaii, and similar tropical climates. For most gardeners, this means greenhouse cultivation or treating it as a container plant that comes indoors during cooler months.

Growing Conditions and Care

If you’re in the right climate zone or willing to provide protected growing conditions, here’s what clappertonia needs:

  • Temperature: Consistently warm conditions; cannot tolerate frost
  • Light: Partial shade to filtered sunlight
  • Soil: Well-draining, fertile soil that stays consistently moist
  • Humidity: High humidity levels (60% or higher)
  • Water: Regular watering to maintain soil moisture without waterlogging

Planting and Care Tips

For those brave enough to try growing clappertonia:

  • Start with a young plant from a reputable tropical plant specialist
  • Plant in spring after all danger of frost has passed
  • Provide protection from strong winds
  • Mulch around the base to help retain moisture
  • In container culture, use a large pot with excellent drainage
  • Bring containerized plants indoors when temperatures drop below 50°F

Wildlife and Pollinator Benefits

While clappertonia does attract small insects to its modest flowers, it’s not a major pollinator magnet compared to many native alternatives. In its native African habitat, it supports local wildlife, but in North American gardens, its ecological benefits are limited.

Consider Native Alternatives

For most North American gardeners, native alternatives will provide better wildlife support and easier care. Consider these native options instead:

  • For tropical zones: Native hibiscus species or firebush (Hamelia patens)
  • For temperate zones: Redbud (Cercis canadensis) or serviceberry (Amelanchier species)
  • For heart-shaped leaves: Wild ginger (Asarum canadense) or native violets

The Bottom Line

Clappertonia is an interesting botanical curiosity that can add exotic flair to tropical gardens or greenhouse collections. However, unless you’re in zones 10-12 or are committed to container growing, this African native probably isn’t practical for your garden. Most gardeners will find greater success and ecological benefit by choosing native plants suited to their local climate and conditions.

If you’re drawn to unusual tropical plants and have the right conditions, clappertonia can be a unique addition to your collection. Just remember – successful gardening often means choosing the right plant for the right place, and for most of us, that means looking closer to home for our garden inspirations.

Clappertonia

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Dilleniidae

Order

Malvales

Family

Tiliaceae Juss. - Linden family

Genus

Clappertonia Meissner - clappertonia

Species

Clappertonia polyandra (K. Schum. ex Sprague) Bech. - clappertonia

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