North America Native Plant

Gumtree

Botanical name: Sapium glandulosum

USDA symbol: SAGL5

Life cycle: perennial

Habit: shrub

Native status: Native to the lower 48 states âš˜ Native to the U.S. Virgin Islands  

Synonyms: Sapium caribaeum Urb. (SACA25)   

Gumtree: A Rare Native Shrub Worth Knowing About Meet the gumtree (Sapium glandulosum), a fascinating native shrub that’s flying under the radar in most gardening circles. While you won’t find this plant at your local nursery, it’s worth understanding what makes this native species special – and why it might ...

Rare plant alert!

Region: Conservation status by state

Status: S3?: Status is uncertain but is somewhere between the following rankings: Inexact rank: ⚘ Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘

Gumtree: A Rare Native Shrub Worth Knowing About

Meet the gumtree (Sapium glandulosum), a fascinating native shrub that’s flying under the radar in most gardening circles. While you won’t find this plant at your local nursery, it’s worth understanding what makes this native species special – and why it might be challenging to grow in your garden.

What is Gumtree?

Gumtree is a perennial shrub that belongs to the spurge family (Euphorbiaceae). Like other shrubs, it’s a multi-stemmed woody plant that typically stays under 13-16 feet tall, though it can occasionally grow taller or develop a single stem depending on environmental conditions. You might also see it listed under its botanical synonym, Sapium caribaeum.

Where Does Gumtree Naturally Grow?

This native beauty calls Florida and the U.S. Virgin Islands home, making it a true subtropical to tropical species. Its limited range gives us a clue about why you don’t see it everywhere – it’s adapted to very specific climatic conditions.

The Rarity Factor: Why You Should Know About Conservation Status

Here’s where things get interesting (and a bit concerning). Gumtree has a Global Conservation Status of S3?, which essentially means its conservation status is undefined – we simply don’t know enough about its population stability. This uncertainty, combined with its limited geographic range, suggests this plant may be uncommon to rare in the wild.

What does this mean for gardeners? If you’re lucky enough to encounter this plant or seeds, it’s crucial to ensure any material is responsibly sourced. Never collect from wild populations, and only purchase from reputable native plant nurseries that can verify their sourcing practices.

Growing Gumtree: The Challenge of Limited Information

Here’s the honest truth: detailed growing information for gumtree is scarce. This isn’t because it’s a difficult plant – it’s because so few people are growing it! Based on its native range, we can make some educated guesses about its preferences:

  • Likely thrives in warm, humid conditions similar to Florida’s climate
  • Probably requires consistently warm temperatures year-round
  • May prefer well-draining soils typical of its native habitats
  • Could benefit from some protection from harsh winds

Should You Plant Gumtree?

This is a tricky question! On one hand, growing native plants is always admirable, and supporting rare species through cultivation can contribute to conservation efforts. On the other hand, the lack of available plants and growing information makes this a challenging choice for most gardeners.

If you live in Florida or a similar climate and are passionate about rare native plants, gumtree could be an exciting addition to a specialized native garden. However, make sure you:

  • Source plants only from reputable native plant specialists
  • Have experience with challenging or unusual native plants
  • Are prepared for some trial and error in growing conditions
  • Consider it part of a conservation effort rather than just landscaping

Alternative Native Options

If you’re drawn to native shrubs but want something more readily available and better understood, consider these fantastic alternatives that share gumtree’s native Florida range:

  • Firebush (Hamelia patens) – attracts hummingbirds and butterflies
  • Wild coffee (Psychotria nervosa) – excellent for shade and wildlife
  • Marlberry (Ardisia escallonioides) – beautiful berries for birds
  • White stopper (Eugenia axillaris) – fragrant flowers and wildlife value

The Bottom Line

Gumtree represents one of those intriguing native plants that remind us how much we still have to learn about our local flora. While it may not be the easiest choice for most gardens, it deserves recognition as part of our native plant heritage. If you’re an experienced native plant enthusiast in the right climate zone, it might be worth seeking out – just remember to source responsibly and think of yourself as participating in conservation through cultivation.

For most gardeners, though, there are plenty of well-documented native alternatives that will give you that satisfaction of supporting local ecosystems while being much more likely to thrive in your landscape. Sometimes the best way to appreciate a rare plant is to learn about it, support its conservation, and choose related natives that are better suited to home gardens.

Gumtree

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

Euphorbiales

Family

Euphorbiaceae Juss. - Spurge family

Genus

Sapium Jacq. - milktree

Species

Sapium glandulosum (L.) Morong - gumtree

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