In search for the source of a mystery honey

Dafydd Jones • 9 September 2025

 A unique honey foraged from the blossom of Eucryphia trees in the UK

It started by accident back in 2022. In Early August, after harvesting the summer honey, I returned some boxes of empty honeycomb to the hives in an out-apiary on Anglesey so that the bees could lick them dry before I stored  them in a stack, off the hives till the following spring. My intention was to remove these boxes of honeycomb from the hives after a few days but as is often the case, I was distracted by more pressing tasks and a week and a half had passed by the time I managed to recover them. To my surprise, the boxes were heavy when I lifted them off the hives and frame after frame were full to the edges of capped honey!

Like a proud father carrying his new-born home from the maternity ward, I brought, what I soon discovered to be a rare treasure, home to be extracted. I proceeded as normal by uncapping the honeycomb and attempted to extract the honey from them by centrifugation. I was surprised that after a few minutes of spinning at low speed, virtually no honey had been flung out. I increased the speed - still nothing! I accelerated to top speed and suddenly with no warning - bang! bang! I slammed the emergency shut-off knob and the spinner ground to a halt. At the bottom of the extractor I found the shattered remains of four frames, still heavy with what appeared to be liquid honey! Bewildered, I came to the conclusion that this was not a late crop of bramble honey but something unusual and very  very different to what we were used to.

The honey appeared to be in a liquid state but refused to be extracted! Although I have no experience of harvesting heather honey, this honey seemed to have similar thixotropic properties. Both heather honey and our mystery honey have a gel-like consistency of a non-Newtonian liquid akin to ketchup or toothpaste. As a consequence it does not flow predictably and forms a gel at rest but can turn liquid when agitated or stirred.  The viscosity of heather honey, due to its higher concentration of colloidal proteins, is so high that it makes the extraction of the honey from the comb very difficult. That’s why heather honey is extracted by pressure (instead of centrifugation), which destroys the combs. Although there was no expanse of heather within range sufficient for our bees to produce this honey, we concluded that we had little choice but to treat it like heather honey. We proceeded to cut the honeycomb from the wooden frames, pack it into a muslin sack and squeeze the honey out of it using a honey press, a device with a threaded shaft  and T-shaped handles a bit like an apple press. The honey that it yielded had an unfamiliar bright o range glow, a jelly-like consistency and the taste was divine and unlike anything we had previously produced. We were flabbergasted! 

To solve the enigma we decided to visit the apiary to see if we could discover the source of our mystery honey. It didn't take us long to realise that the bees were consistently making a beeline to a tree about 50m away. The tree in question was alive with bees and plastered in large white flowers with prominent stamens and labelled as Eucryphia x nymansensis "Nymansay". Further research revealed that it was a hybrid between two Chilean species, Eucryphia cordifolia and Eucryphia glutinosa, produced from seed harvested in 1914 at the Nymans gardens, West Sussex, now a National Trust property. Two individuals were selected for their outstanding qualities and tentatively named ‘Nymans A’ and ‘Nymans B’. ‘Nymans A’ was later shown at the RHS show in 1924 and received an Award of Merit and was popularised under the name ‘Nymansay’, which was derived from the pronunciation ‘Nymans A’.

One of the parents of this hybrid, Eucryphia cordifolia, commonly known as ulmo, thrives in the Valdivian rainforest of south-central Chile and adjacent Argentina. This species is found along the Andes range, typically at latitudes of 38 to 43°S, can be found at altitudes of up to 2300 feet above sea level. Characterized by its thick trunk and broad crown, this tree can grow over 12 metres high and blooms in February and March, depending on latitude and altitude. The flowers contain a highly appreciated aromatic nectar, harvested by introduced European bees and commercialized as much sought after ulmo honey. 


Based upon peer-reviewed scientific studies, Ulmo Honey has been shown to have stronger antibacterial properties than Manuka honey and contains more than double the phenolic content of Manuka honey. It is much sought after by honey connoisseurs and has received a gold medal at the London International Honey Awards. Ulmo Honey's flavour profile is prized for its mild floral notes, appealing to those who seek a more delicate taste compared to the intense, earthy flavour of Manuka honey. It is known for its aromatic flavour profile with tasting notes of almonds, vanilla, and aniseed. It has a strong floral note and a slight astringent, minty-fresh aftertaste. The honey's taste is often described as sweet, fragrant, and exquisite.

The other Parent, E. glutinosa, is a large deciduous shrub or small tree, growing to 5-6 m. It is quite rare in the wild with a relatively restricted distribution in central-southern Chile where if forms an occasional component of river-side habitats in a woodland understorey. Mature specimens reliably produce masses of white flowers during late summer attracting bees from miles around. Interestingly, the two Chilean Eucryphia species do not coexist in their natural habitats. Hybridisation could only occur when they were both planted in close proximity in the Nymans gardens in West Sussex.

Closer inspection of the gardens revealed more Eucryphia specimens in flower in the proximity of the apiary, attracting our bees like magnets. Native to Tasmania, Eucryphia lucida, commonly called leatherwood, is abundant in temperate rainforests in the west of the State where it enjoys up to 2.5 m of annual rainfall and is common from low elevation to sub-alpine habitats. It is a vigorous, fast growing component of these forests and dense thickets of it can regenerate in recently disturbed areas. E. Lucida is very important to the Tasmanian apiculture industry – over 70% of all the honey produced in Tasmania is leatherwood honey and relies on the nectar of E. lucida. Similar to ulmo honey, leatherwood honey is highly sought-after for its exquisite taste and strong anti-microbial properties.


The final source of our mystery honey was a row of wall-trained specimens of Eucryphia x intermedia "Rostrevor". Hybrids between the deciduous Chilean E. glutinosa and the evergreen Tasmanian E. lucida first arose in cultivation during the early 20th century. John Rodgers, head gardener to Sir John Ross-of-Bladensburg at Rostrevor, County Down, Northern Ireland, spotted seedlings intermediate between the two parent species which were growing in close proximity. These were distributed among Sir John’s friends, including to Lord Aberconway at Bodnant. It was Lord Aberconway who first exhibited this cross, under the name ‘Rostrevor’, at the RHS show at Vincent Square on 1st September 1936 where it received an Award of Merit.

Although our mystery honey is neither pure ulmo nor pure leatherwood honey, it comes from trees and shrubs that are closely related Eucryphia hybrids whose parents are the same species as those that produce the prized honey in Chile and Tasmania. Our honey shares the same appearance, thixotropic consistency and tasting notes as the prized and leatherwood honey. In late August when this honey was produced, there was little else for our bees to forage on apart from the last remnants of fireweed and Himalayan balsam. Their mainstay of bramble and white clover blossom had long finished. In fact, in all of our other apiaries we were already in the process of supplementing the bees' winter stores by feeding them with baker's fondant. As far as I can see, we are unique in the UK in producing Eucryphia honey for sale. Although we prepare the hives at this location for a crop of Eucryphia honey annually, we only succeed once every 3 to 4 years due to the timing of the flowering, the vigour with which the trees are flowering and the weather. This year, the nectar flow was curtailed by the drought conditions even though the trees were flowering profusely at the right time! Consequently it is rare and we can only occasionally harvest a limited supply. I suspect that more Eucryphia honey makes its way into hives in the UK than we realise. However, this probably goes un-noticed as it appears in late August when the main crop has been harvested, regular hive inspections have ceased and beekeepers are treating their colonies against varroa mites and are feeding them up for winter. As previously mentioned, it was only by accident that we discovered this treasure in our hives. 


We plan to celebrate and share our unique 2025 crop of Welsh Eucryphia honey on 13th September both at the Conway Honey Fair and at the Egni Food Festival at the Menai Science Park. It will then be available for mail-order from Anglesey Bees' website along with our award-winning Spring and Summer Anglesey Wildflower honey.

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