Blushwood Berry (Fontainea picrosperma): Tree, Fruit, Seed and Extract Explained
Updated 4 November 2026
The blushwood berry is the fruit of Fontainea picrosperma, the blushwood tree, a rare rainforest tree found naturally only in the Atherton Tablelands of Far North Queensland, Australia. Blushwood Berry Extract is made from the large bitter seed inside that fruit, not from the fruit itself: the whole seed, concentrated ten to one. This guide covers everything in one place: the tree, the fruit, the seed, where it grows, why it is so hard to cultivate, what the research has studied, and how the seed becomes the extract.
In short: blushwood (Fontainea picrosperma) is a subcanopy tree of the spurge family, described in 1936 and endemic to a roughly 30 by 30 km area of Far North Queensland. Trees are male or female; only females bear the pink, velvety, plum-sized blushwood berry. The fruit is not eaten. The seed inside, whose name literally means "bitter seed", is harvested from cultivated trees and made into a 10:1 whole-seed extract. Twelve peer-reviewed papers have studied the tree and its seed, and interest is accelerating.
Blushwood berry: quick facts
| Scientific name | Fontainea picrosperma C.T.White, family Euphorbiaceae (the spurge family) |
|---|---|
| Common names | Blushwood, blushwood tree, blushwood berry (the fruit); also Fontain's blushwood |
| Name meaning | picrosperma = "bitter seed" (Greek); described in 1936 |
| Native range | Atherton Tablelands, Wet Tropics of Far North Queensland, Australia, roughly 700 to 1,200 m; grows naturally nowhere else |
| Growth habit | Subcanopy rainforest tree, in filtered light and steady humidity |
| Sex system | Dioecious: separate male and female trees; only females bear fruit |
| The fruit | Plum-sized, velvety, pale green ripening to a pink-red blush; not eaten |
| The seed | Large, smooth and bitter; the only part used in Blushwood Berry Extract |
| Supply | Controlled cultivation; nothing is gathered from the wild |
What is the blushwood berry?
The blushwood berry is the fruit of Fontainea picrosperma. Ripe, it is roughly the size of a small plum, rounded and faintly ribbed, with a soft velvety skin that turns from pale green to a pink-red blush. That blush gives the tree its common name. The species belongs to the Euphorbiaceae, the spurge family, one of the largest plant families on Earth; its genus, Fontainea, was described in 1870 and counts roughly nine species across eastern Australia, Papua New Guinea and New Caledonia, several of them conservation-listed.
For most of the twentieth century the blushwood tree was a footnote in rainforest botany. Its story is short, recent and genuinely unusual: no centuries of folklore, no tidy legend, just a specific species from a specific place that modern science has only recently begun to study. That newness is a large part of why people who find it now feel early to something.
Where does the blushwood tree grow?
Naturally, in one place: the rainforests of the Atherton Tablelands in Far North Queensland, part of Australia's Wet Tropics, at roughly 700 to 1,200 metres on basalt-derived soils. Its natural range is small, about 30 by 30 kilometres on the southern Tablelands, and the populations within it are fragmented and genetically distinct from one another (Shapcott et al., 2016). It lives beneath the main forest roof, in filtered light and steady humidity, and it does not naturalise casually anywhere else.
The berries behind Blushwood Berry Extract do not come from those wild stands. They come from controlled cultivation: trees grown deliberately, with male and female trees in the right ratio and pollination managed rather than left to chance. Cultivation protects the wild population and gives batches consistent enough to test and compare.
How does the blushwood tree reproduce?
This is the part botanists find most interesting. The blushwood tree is dioecious: every tree is either male or female, and only the females bear fruit. The flowers of both sexes are small, white, star-shaped and scented, and they produce no nectar at all. Field research in Ecology and Evolution found that scent is the main attractant, that female flowers mimic the scent of the pollen-bearing males, and that pollination is carried out by generalist beetles, flies, predatory wasps and thrips working day and night. Hand-pollinated flowers set about 40% fruit against about 21% for naturally pollinated ones (Grant et al., 2021).
Pollen also barely travels. A 2019 study in Heredity found that at least 63% of seeds were sired by male trees growing within 30 metres of the mother tree, and that only about 27% of local males contributed to reproduction at all (Lamont et al., 2019). Put together, the biology explains the economics: this is a tree that cannot be scattered as seed and harvested in autumn.
Blushwood berry seed vs fruit: which part is used?
The seed. Blushwood Berry Extract is a whole-seed extract, and the flesh of the fruit plays no part in it. The seed is where the plant concentrates the compound classes people are interested in, while the fruit pulp is mostly water and fibre around it.
| The fruit | Pink, velvety, plum-sized. Borne on female trees only. Not eaten and not sold as food. Its job in nature is to protect and disperse the seed. |
|---|---|
| The seed | Large, smooth and bitter (picrosperma = "bitter seed"). The part harvested from cultivated trees and the sole plant ingredient in Blushwood Berry Extract. |
| The extract | The whole seed, dried, milled and concentrated at 10:1. Filled into vegan capsules, or blended with coconut glycerin and purified water for the tincture. |
Can you eat blushwood berries?
No. The fresh fruit is not a food, has no documented food use, and is not something we or anyone reputable sells to eat. The seed is bitter by nature and is never sold raw by Blushwood Health. The only sensible form is a properly prepared, concentrated extract that has been independently tested by a laboratory before it reaches a capsule or a dropper bottle. Ours is tested by Eurofins Food and Feed Testing Sweden for heavy metals and microbiology, and we publish the report.
What does "whole-seed 10:1 extract" mean?
Two things, both worth reading on a label. Whole-seed means the entire seed goes in and nothing is isolated out, so its natural spectrum of compounds stays together. 10:1 is the extraction ratio: ten parts of raw seed are concentrated into one part of finished extract, so a 500 mg capsule represents about five grams of seed. The milled seed is extracted by percolation, one slow continuous pass, which we explain in how Blushwood Berry Extract is made.
- Capsules: the 10:1 whole-seed extract and nothing else, in a vegan capsule. Three a day, spaced out: morning, midday and before bed. Blushwood Berry Extract Capsules.
- Tincture: the same extract with coconut-derived glycerin and purified water. Half a dropper under the tongue three times a day, and it can also be applied to a clean face or areas of concern morning and night; the two uses combine. Blushwood Berry Extract Tincture.
Ratios higher than 10:1 are sometimes advertised. Higher is not automatically better, and a ratio says nothing about which part of the plant was used, whether it is the right species, or whether it was tested. Our guide to choosing a blushwood berry supplement covers the questions that matter.
What has research studied in the blushwood seed?
A surprising amount for a tree this rare. Twelve peer-reviewed papers in PubMed mention Fontainea picrosperma, almost all from the last decade: population genetics and pollination, the gene families the tree uses to build its compounds, and the chemistry of the seed. A 2022 paper in the Journal of Natural Products described the seed as rich in a family of diterpene esters called epoxytiglianes, held in an oily matrix of free fatty acids (Chianese et al., 2022), and a 2022 study in Science Translational Medicine studied topical epoxytiglianes from the blushwood tree for their effects on skin and their role in wound healing and tissue repair in animal models (Powell et al., 2022).
That research is about the plant and compounds isolated from it, not about any food supplement, and none of it tested Blushwood Berry Extract. We share it as information about a genuinely remarkable botanical, and we advocate for more of it. The full walk-through, paper by paper, is in what researchers have studied in the blushwood seed.
Why is interest in the blushwood berry growing?
Three things are compounding at once: scientific attention is increasing, curiosity about rare and honest botanicals is rising, and word of mouth spreads quickly among people who like to understand something before everyone else does. More people discover the blushwood berry every week; over 20,000 people have now tried Blushwood Berry Extract. In the Blushwood Health Consumer Survey of 3,752 people, 89% were over 46, which matches who writes to us: the label-reader, the researcher, the one wary of hype.
What people praise it for
We don't make the claims. Our customers do, in their own words, and we pair what they say with what is actually in the whole seed.
- Immune support: supporting a healthy immune response.*
- Inflammatory support: supporting a healthy inflammatory response.*
- Energy: more energy in the day.
- Skin and cellular support: skin that looks and feels better, and support for normal cellular health.*
Experiences shared by verified customers on Trustpilot and Reviews.io; individual results vary.
Behind those experiences sits what the whole seed contains, stated as composition and kept separate from anyone's experience: polyphenols, plant antioxidants studied in relation to inflammation markers and cellular health (published review); flavonoids, a subgroup of polyphenols with strong evidence around heart health (meta-analysis); a natural fatty-acid matrix, one of the body's main energy sources (published review); and the diterpene esters described above. This is general education about compound classes, not a statement about what Blushwood Berry Extract does. More in what people praise Blushwood Berry for.
Can you grow a blushwood tree?
With patience and the right conditions. Fontainea picrosperma is propagated from seed, which germinates in about 26 to 58 days with the seed leaves emerging above the soil (Australian Tropical Rainforest Plants). It wants shade to part-shade, steady warmth and humidity, as in a rainforest understorey. Because it is dioecious and obligately outcrossing, a single tree will never set seed on its own: anyone hoping for fruit needs both sexes close together, and in practice hand pollination. Blushwood tree seeds and plants are rarely sold, and Blushwood Health does not sell either.
One caution: an unrelated tree, Hylandia dockrillii, is sometimes also called blushwood. If you are buying anything labelled blushwood, check the Latin name; our guide to why the species on the label matters explains the difference.
Frequently asked questions
Is Fontainea picrosperma the same as the blushwood berry?
Yes. Fontainea picrosperma is the scientific name of the blushwood tree, and the blushwood berry is its fruit. The nickname is loosely applied, and an unrelated species, Hylandia dockrillii, is sometimes also called blushwood, which is why the Latin name matters on any label.
What does the name picrosperma mean?
It is Greek: pikros (bitter) and sperma (seed), literally "bitter seed". Queensland Government Botanist C.T. White described the species in 1936; the genus name Fontainea dates to 1870.
Can you eat blushwood berries?
No. The fresh fruit is not a food and has no documented food use, and the seed is bitter by nature. The only sensible form is a properly prepared, concentrated extract that has been independently tested.
Is the blushwood berry from the rainforest?
The tree is native to the rainforests of the Atherton Tablelands in Far North Queensland. The berries behind Blushwood Berry Extract are not gathered from the wild: they come from controlled cultivation, which protects the small wild stands and gives consistent batches to test.
Can you buy blushwood tree seeds or a blushwood tree?
Rarely, and with difficulty. The tree is dioecious, so you need male and female plants, and it needs warm, humid, shaded subcanopy conditions. Seed germinates in roughly 26 to 58 days. Blushwood Health does not sell seeds or plants.
Who pollinates the blushwood tree?
Generalist insects: beetles, flies, predatory wasps and thrips, by day and by night. The flowers produce no nectar; scent does the attracting, and female flowers mimic the scent of the pollen-bearing males.
What part of the blushwood berry is used in the extract?
The seed. Blushwood Berry Extract is the whole seed concentrated 10:1; the fruit flesh plays no part. Ten parts of raw seed become one part of extract, so a 500 mg capsule represents about five grams of seed.
Has the blushwood berry been studied?
The tree has. Twelve peer-reviewed papers in PubMed mention Fontainea picrosperma, covering its genetics, pollination, biochemistry and seed compounds. None of them tested a food supplement. Our article on what researchers have studied in the blushwood seed walks through each one.
Our honest take
Most "ancient superfood" stories are marketing dressed as history, a plant with a tidy legend attached to make it feel proven. The blushwood berry is the opposite, and that is what we find compelling. Its story is new, its science is early, its biology is genuinely strange, and the most honest thing anyone can tell you about it is what the research does and does not show.
If you remember one thing from this page, make it this: the seed is the point, the species is the safeguard, and the lab report is the proof. Everything else, including what we sell, should be judged against those three. Start with the complete guide to Blushwood Berry Extract, read how to take it, or see the capsules and tincture.
Sources
- Royal Botanic Gardens, Kew, Plants of the World Online: Fontainea picrosperma
- Shapcott, A. et al. (2016). Population genetic analysis of Fontainea picrosperma. BMC Plant Biology. PubMed 26926947
- Lamont, R.W. et al. (2019). Short distance pollen dispersal and low genetic diversity in Fontainea picrosperma. Heredity. PubMed 31076650
- Grant, E.L. et al. (2021). Floral attraction and flower visitors of Fontainea picrosperma. Ecology and Evolution. PubMed 34367589
- Chianese, G. et al. (2022). Cryptic epoxytiglianes from the kernels of the blushwood tree. Journal of Natural Products. PubMed 35973043
- Powell, L.C. et al. (2022). Topical, immunomodulatory epoxy-tiglianes induce biofilm disruption and healing in acute and chronic skin wounds. Science Translational Medicine. PubMed 36103515
- Australian Tropical Rainforest Plants (CSIRO, Lucidcentral): Fontainea picrosperma
- Atlas of Living Australia: Fontainea picrosperma · Wikipedia: Fontainea picrosperma
Botanical and research information about the plant is not a statement about what this food supplement does. Experiences shared by verified customers; individual results vary. *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.
Blushwood Berry: the essentials
- What Blushwood Berry Extract is: the complete guide
- What people praise Blushwood Berry for
- Blushwood Berry side effects and safety
- Is Blushwood Berry Extract legit? An honest answer
- Blushwood Berry reviews from verified customers
- Where to buy Blushwood Berry Extract
- The blushwood berry: tree, fruit, seed and extract
- What researchers have studied in the blushwood seed
- Blushwood Berry capsules · Blushwood Berry tincture
