Fontainea picrosperma (Blushwood Tree): Common Name, Habitat & Care
Published 24 August 2026
Most people meet the blushwood tree through a bottle before they ever meet the plant. That is a shame, because Fontainea picrosperma is a genuinely remarkable piece of botany: a rare, range-restricted rainforest tree with an unusual reproductive strategy, a name that literally means "bitter seed," and a scientific story that field researchers are still writing.
This is our botanical reference guide to the species itself — taxonomy, habitat, biology and research history — kept deliberately separate from anything about supplements. The plant deserves its own page.
In short: Fontainea picrosperma, commonly called blushwood, is a subcanopy rainforest tree in the family Euphorbiaceae, found naturally only in the Atherton Tablelands region of Far North Queensland, Australia. It is dioecious — individual trees are either male or female — with small, white, scented flowers pollinated by generalist insects. Described by botanist C.T. White in 1936, it remained scientifically quiet until researchers began studying its seed chemistry and reproductive biology in earnest over the past two decades.
| Scientific name | Fontainea picrosperma C.T.White (family Euphorbiaceae; genus Fontainea, described 1870, roughly nine species) |
|---|---|
| Common name | Blushwood, blushwood tree; also listed as Fontain's blushwood in Australian plant databases. picrosperma is Greek for "bitter seed"; the species was described by C.T. White in 1936 |
| Natural habitat | Subcanopy of tropical rainforest in the Atherton Tablelands, part of the Wet Tropics of Far North Queensland, Australia, at roughly 700 to 1,200 m on basalt-derived soils. Endemic: it grows naturally nowhere else |
| Growth habit | Subcanopy rainforest tree living beneath the main forest roof in filtered light and stable humidity |
| Sex system | Dioecious: separate male and female trees; only females bear fruit |
| Flowers and pollination | Small, white, star-shaped, scented flowers with no nectar; pollinated day and night by generalist beetles, flies, wasps and thrips |
| Fruit | Pink-blushing fruit borne on female trees. It is not eaten as a fruit; the seed is what draws scientific interest |
| Propagation | From seed, which germinates in about 26 to 58 days. Demanding: needs male and female trees in the right ratio, insect or hand pollination, and rainforest-like subcanopy conditions. Commercial supply comes from controlled cultivation, not wild harvest |
| Genetics and conservation | Rare and range-restricted, with short-distance pollen dispersal and low genetic diversity recorded across the species (Heredity, 2019) |
What is Fontainea picrosperma, botanically?
Fontainea picrosperma belongs to the family Euphorbiaceae — the spurge family, one of the largest plant families on Earth. Its genus, Fontainea, was described in 1870 and today counts roughly nine species scattered across eastern Australia, Papua New Guinea and New Caledonia. Several of its relatives are so range-restricted that they are conservation-listed, which tells you something about the whole group: these are specialist trees of small, particular places.
The species itself was described scientifically in 1936 by C.T. White, the Queensland Government Botanist of the era. The name he chose is quietly wonderful: picrosperma combines the Greek pikros (bitter) and sperma (seed) — "bitter seed." The common name, blushwood, refers to the pink-red blush of the ripe fruit.
Where does the blushwood tree grow?
Nowhere, naturally, except one region: the rainforests of the Atherton Tablelands in Far North Queensland, part of Australia's Wet Tropics. There it lives as a subcanopy tree — beneath the main forest roof, in filtered light, dependable humidity and the stable rhythms of an ancient forest system.
That restricted range is not a marketing flourish; it is measurable biology. Genetic research published in Heredity found short-distance pollen dispersal and low genetic diversity across the species — the signature of a tree that has lived in small, close-knit neighbourhoods for a very long time. Trees like this do not naturalise casually elsewhere, which is why responsible supply comes from deliberate cultivation rather than wild harvest.
How does its dioecious biology work?
This is the part botanists find most interesting. F. picrosperma is dioecious: every tree is either male or female, and only the females bear fruit. The flowers of both sexes are small, white and star-shaped, and — unusually — produce no nectar. Field studies published in Ecology and Evolution found that scent is the main attractant, that female flowers mimic the scent profile of the pollen-offering males, and that pollination is carried out by a broad cast of generalist insects — beetles, flies, predatory wasps and thrips — working both day and night shifts.
The same research documented that the species is pollen-limited in the wild: hand-pollinated flowers set nearly twice as much fruit (about 40%) as naturally pollinated ones (about 21%). In plain language, wild blushwood trees produce fewer fruit than they could, simply because not enough pollen arrives.
Why is the tree difficult to cultivate — and why does that matter?
Everything above adds up to a demanding agricultural proposition. A grower needs male and female trees in the right ratio, insect pollinators (or hand pollination) to overcome pollen limitation, and growing conditions that recreate a subcanopy niche assembled over millions of years. There is no scattering seed and coming back in autumn.
That difficulty explains two things about the blushwood world. First, why genuine supply is limited and carefully managed — the berries behind our own extract come from controlled cultivation, which both protects the wild stands and delivers consistent, testable batches. Second, why lookalike products are common: a rare, hard-to-grow tree with a loose common name is exactly the situation that invites substitution with the unrelated Hylandia dockrillii. Our guide to why species matters covers that problem in depth.
Growing Fontainea picrosperma: propagation, light and care
Fontainea picrosperma is rarely grown outside specialist cultivation, so published horticultural data is thin. The botanical literature still says enough to answer the three questions growers ask most: how the tree reproduces, what conditions it needs, and where it grows naturally.
How is Fontainea picrosperma propagated?
Fontainea picrosperma is propagated from seed. The Australian Tropical Rainforest Plants key records germination in about 26 to 58 days, with the seed leaves emerging above the soil. Because the species is dioecious, only female trees set seed, and only when pollen reaches them from a male tree nearby.
Population genetic studies describe the species as obligately outcrossing, so a single tree will not produce seed on its own. Anyone planning for fruit needs both sexes.
What light and conditions does it need?
In the wild, Fontainea picrosperma is a subcanopy tree of well-developed rainforest. It grows beneath the main forest roof in filtered light rather than full sun, at roughly 700 to 1,200 metres above sea level, on soils derived from basalt in the humid uplands of the Wet Tropics.
For anyone growing it, that habitat is the best guide: shade to part-shade, and steady warmth and humidity, as in a rainforest understorey.
What is the natural habitat of Fontainea picrosperma?
Fontainea picrosperma is endemic to the Atherton Tablelands in Far North Queensland, part of Australia's Wet Tropics. Its natural range is small, roughly 30 by 30 kilometres on the southern Tablelands, and the populations within it are fragmented and show marked genetic differences from one another.
What is the research timeline?
A short history of human attention to this tree: the genus Fontainea enters the scientific record in 1870; the species is described by C.T. White in 1936; and for most of the twentieth century it remains a footnote in rainforest botany. From the early 2000s, its seed chemistry begins to attract serious scientific interest, and with it a wave of proper field biology: reproductive studies, pollination experiments and population genetics through the 2010s, published in journals like Ecology and Evolution and Heredity.
Today the species sits in an unusual position: still rare, still range-restricted, but no longer obscure — studied by botanists, cultivated deliberately, and quietly famous far beyond the Tablelands. The research story is young, and we openly advocate for more of it.
Frequently asked questions
Is Fontainea picrosperma the same as the blushwood tree?
Yes. Fontainea picrosperma is the scientific name of the tree commonly called blushwood. Note that the nickname is loosely applied: an unrelated species, Hylandia dockrillii, is sometimes also called blushwood, which is why the Latin name matters on any product label.
What does the name picrosperma mean?
It comes from Greek: pikros (bitter) and sperma (seed) — literally "bitter seed." The species was described scientifically by Queensland botanist C.T. White in 1936; the genus name Fontainea dates to 1870.
Where can you see a blushwood tree?
In the wild it grows only in the rainforests of the Atherton Tablelands region of Far North Queensland, Australia, as a subcanopy tree beneath the main forest roof. It is not a common garden or park species; outside its natural range you are most likely to encounter it in specialist cultivation.
Is the blushwood fruit edible?
The fresh fruit is not a food, and no traditional food use is documented for this species. The seed is used only as a carefully prepared, concentrated 10:1 extract that is batch-tested at an independent laboratory before use in supplements.
Who pollinates Fontainea picrosperma?
Generalist insects. Peer-reviewed field studies recorded beetles, flies, wasps and thrips visiting the small, white, scented flowers by day and night. The flowers produce no nectar, and wind plays almost no role — scent appears to be the main attractant.
Our honest take
We sell an extract of this tree's seed, so you might expect this page to bend botany toward marketing. We have tried to do the opposite: the tree is interesting enough without embellishment, and the facts here are checkable against the sources below. If you remember one thing, make it this — Fontainea picrosperma is a specialist of one small place, and everything about how it is studied, grown and sold flows from that single fact.
Sources
- Royal Botanic Gardens, Kew — Plants of the World Online: Fontainea picrosperma (taxonomic record)
- Grant, E.L. et al. (2021). Floral attraction and flower visitors of a subcanopy, tropical rainforest tree, Fontainea picrosperma. Ecology and Evolution. PubMed 34367589
- Lamont, R.W. et al. (2019). Short distance pollen dispersal and low genetic diversity in a subcanopy tropical rainforest tree, Fontainea picrosperma (Euphorbiaceae). Heredity. PubMed 31076650
- Shapcott, A. et al. (2016). Population genetic analysis of … Fontainea picrosperma C.T. White (Euphorbiaceae). BMC Plant Biology 16:16. PMC4772518
- Australian Tropical Rainforest Plants (CSIRO, Lucidcentral): Fontainea picrosperma (germination, altitude, habitat)
- Atlas of Living Australia: Fontainea picrosperma (common names)
- Wikipedia: Fontainea picrosperma
Curious what the seed becomes? Start with What Is Blushwood Berry Extract? A Complete Guide, or read what people praise it for.
This article is botanical reference information, not medical advice. *These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
