Croton lechleri aka Dragon's Blood

Croton lechleri is best suited to growers in warm, frost-free tropical climates. It requires full sun, cannot tolerate frost, and is restricted to USDA zones 10–12. In suitable climates it is relatively undemanding once established, growing rapidly in well-drained, moist soil. It is not a houseplant candidate.

Dragon's blood tree is a fast-growing species reaching 10–20 meters in height with a broad, open crown of similar spread. Its trunk is narrow relative to its height (~30 cm in diameter). Large heart-shaped leaves grow to 15–30 cm across, and fruit spikes reach 30–50 cm long. In secondary forest habitats it establishes quickly as a pioneer species.

Croton lechleri prefers consistently moist, well-drained soil. It naturally inhabits riverbanks and moist tropical lowlands. Avoid waterlogged conditions; the key is moisture without stagnation.

This species is adaptable across soil textures — sandy, loamy, and clay soils are all tolerated — but well-drained, fertile soil is preferred. It grows across a range from mildly acidic to alkaline pH. It naturally colonizes mineral-rich disturbed soils in the Amazon basin.

Croton lechleri is a tropical tree suited to USDA hardiness zones 10–12. It has no frost tolerance and is native to Amazonian lowlands from sea level to 1,000 m elevation. It requires consistently warm, humid conditions to thrive.

As an Amazonian rainforest tree, Croton lechleri is accustomed to high ambient humidity. It is not suited to dry climates. It tolerates strong winds but not maritime or coastal salt exposure.

In its native range this species is evergreen and shows no pronounced seasonal dormancy. Cultivation is only practical in frost-free tropical or subtropical climates (zones 10–12). No specific seasonal care guidance is documented in available horticultural sources.

Croton lechleri produces small flowers with fruit forming as three-parted capsules borne on slender spikes 30–50 cm long. Detailed bloom time and flower description data is not well documented in horticultural literature for this primarily wild-harvested species.

No cultivated varieties or named cultivars of Croton lechleri are documented in available horticultural sources. The species is primarily harvested from wild populations in the Amazon basin.

This tree is strictly an outdoor plant for warm, frost-free climates (USDA zones 10–12). It performs best in full sun and is not suitable for temperate gardens. It tolerates strong winds and a variety of soil types. It is used in agroforestry as a pioneer species and living fence in South American tropical regions.

Croton lechleri is propagated from seed. Seedlings are relatively delicate and susceptible to herbivory in natural settings.

Pollination method is not explicitly documented in available botanical sources for this species. As a tropical Euphorbiaceae tree, insect pollination is typical for the family, but no species-specific data was found in reviewed sources.

Croton lechleri is one of the most medicinally studied Amazonian trees, with 53 peer-reviewed publications documenting its properties. Its red latex resin — known as sangre de drago or dragon's blood — has been used traditionally for wound healing, gastrointestinal disorders, viral infections, and inflammation. The resin is rich in proanthocyanidins (>90% of dry weight), taspine (the principal wound-healing alkaloid), and dimethylcedrusine (lignan central to tissue regeneration). It exhibits antibacterial, antifungal, anti-inflammatory, antiviral, and antitumor properties. Crofelemer (SP-303), derived from the sap, is FDA-approved under the brand name Mytesi for HIV-associated diarrhea. Research has also identified cytotoxic activity against melanoma and colon cancer cell lines. Traditional internal dose is 10–15 drops of the resin in liquid, taken 1–3 times daily; it is also applied topically to wounds, bites, skin conditions, and inflamed gums.

Beyond its medicinal applications, the sap of Croton lechleri is used as an ingredient in commercial cosmetic preparations for its antioxidant and skin-conditioning properties. The wood is used for minor construction purposes including drawers, formwork, plywood, and interior finishes. In agroforestry, the species functions as a pioneer for forest regeneration and is planted as a living fence in tropical farm systems.

Croton lechleri is not considered edible. No edible parts are documented in any reviewed source. The red latex resin is used medicinally but is not a food source.

No specific pest or disease vulnerabilities are documented in horticultural sources for this species. In the wild, seedlings are noted to be susceptible to predation. As a member of Euphorbiaceae, the latex content may confer some natural pest deterrence.