North America Non-native Plant

Natal Orange

Botanical name: Strychnos spinosa

USDA symbol: STSP8

Life cycle: perennial

Habit: shrub

Native status: Non-native, reproduces and persists in the wild in the lower 48 states  

Natal Orange: An Exotic Shrub with Citrus-Like Appeal Ever wondered what it would be like to grow something that looks like it belongs in an African safari adventure? Meet the Natal orange (Strychnos spinosa), a fascinating shrub that brings a touch of exotic flair to warm-climate gardens. While it’s not ...

Natal Orange: An Exotic Shrub with Citrus-Like Appeal

Ever wondered what it would be like to grow something that looks like it belongs in an African safari adventure? Meet the Natal orange (Strychnos spinosa), a fascinating shrub that brings a touch of exotic flair to warm-climate gardens. While it’s not actually related to citrus fruits despite its common name, this thorny beauty has quite a story to tell.

What Is Natal Orange?

Natal orange is a perennial, multi-stemmed woody shrub that typically grows 13 to 16 feet tall, though it can sometimes reach greater heights or develop a single stem depending on growing conditions. Don’t let the name fool you – this isn’t an orange tree at all! It’s actually a member of the Strychnos family and hails from the warm regions of southern and eastern Africa.

This non-native plant has found its way to Florida, where it reproduces naturally in the wild. While it’s established itself in the Sunshine State, it’s not currently classified as invasive or noxious.

Geographic Distribution

In the United States, you’ll find Natal orange growing in Florida, where the warm, subtropical climate suits its preferences. Originally from South Africa, Zimbabwe, Botswana, and Mozambique, this plant is right at home in hot, sunny conditions.

Why Gardeners Choose Natal Orange

So what makes this thorny character appealing to gardeners? Here are the main draws:

  • Unique fruits: The orange-like fruits are visually striking and give the plant its common name
  • Fragrant flowers: Small white blooms release a pleasant fragrance
  • Attractive foliage: Glossy green leaves provide year-round interest
  • Natural barrier: Those thorny branches make it excellent for security hedging
  • Pollinator magnet: Bees and butterflies love the fragrant flowers
  • Low maintenance: Once established, it’s quite drought tolerant

Growing Conditions and Care

If you’re in USDA hardiness zones 9b through 11, you might be able to successfully grow Natal orange. Here’s what this African native prefers:

  • Sunlight: Full sun to partial shade
  • Soil: Well-draining soil is essential
  • Water: Drought tolerant once established, but regular watering during establishment
  • Temperature: Protect from frost in cooler areas

Planting and Care Tips

Ready to give Natal orange a try? Here’s how to set it up for success:

  • Plant in spring after the last frost danger has passed
  • Choose a location with good drainage – soggy soil is this plant’s enemy
  • Water regularly for the first year until the root system establishes
  • Prune after fruiting to maintain shape and size
  • In marginal zones, consider container growing so you can protect it indoors during cold snaps

Landscape Role and Design Ideas

Natal orange works well as a specimen plant where you want to create a conversation piece. Its thorny nature makes it perfect for barrier hedging along property lines or under windows for security. The plant fits beautifully into tropical and subtropical garden themes, and its drought tolerance makes it suitable for xeriscaping projects.

Consider Native Alternatives

While Natal orange can be an interesting addition to warm-climate gardens, consider exploring native alternatives that provide similar benefits while supporting local ecosystems. Some excellent native options for similar roles include:

  • Wild lime (Zanthoxylum fagara) for thorny barriers
  • Firebush (Hamelia patens) for pollinator attraction
  • Coontie (Zamia integrifolia) for unique texture

The Bottom Line

Natal orange offers an exotic touch for adventurous gardeners in warm climates. While it’s not native to North America, it’s not considered problematic either. If you’re drawn to unique plants with interesting fruits and don’t mind dealing with thorns, this could be a fun addition to your landscape. Just remember to also include native plants that support local wildlife and ecosystems – balance is key in creating a thriving garden that benefits everyone!

Natal Orange

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

Gentianales

Family

Loganiaceae R. Br. ex Mart. - Logania family

Genus

Strychnos L. - strychnos

Species

Strychnos spinosa Lam. - Natal orange

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