How Mānuka Honey Is Made: From Flower to Jar

Summary: Mānuka honey is made when honey bees collect nectar from the flowers of the Mānuka plant, Leptospermum scoparium, and concentrate that nectar into honey inside the hive. Beekeepers place hives within flying distance of Mānuka stands during a short local flowering period, harvest the sealed comb, and extract the honey at a processing facility. Before any of it can be exported as Mānuka honey, each batch is laboratory tested against a five attribute definition set by New Zealand's Ministry for Primary Industries.

Most guides to Mānuka honey stop at the hive. They explain how bees turn nectar into honey and leave the reader there, which skips the half of the process that decides what actually reaches a shop shelf in the United Kingdom. This article follows the full chain: the plant, the bees, the harvest, the extraction, the laboratory testing and the labelling rules that apply once the honey arrives in Britain.

Where Mānuka honey comes from

Mānuka honey begins with a single plant. Leptospermum scoparium is a shrub or small tree in the myrtle family, native to New Zealand and to south eastern Australia, and its nectar is the only nectar that produces Mānuka honey. The plant is unusually variable. Landcare Research records it growing from coastal to low alpine habitats, in forms ranging from low prostrate populations to trees of around twelve metres.

That variability matters commercially. Nectar chemistry is not uniform across the species, which is part of why two jars carrying the same floral name can differ considerably in strength, and why every batch has to be graded rather than assumed.

What Mānuka is not

Two plants are regularly confused with Mānuka. Kānuka, Kunzea ericoides, is a different species altogether. New Zealand's Ministry for Primary Industries states that honey produced predominantly from kānuka will not meet the Mānuka honey definition, and that the definition test was designed specifically to tell the two apart.

Australian Leptospermum is the second. Leptospermum scoparium grows in south eastern Australia as well as in New Zealand, but the Ministry for Primary Industries confirms that its science programme was designed to identify Mānuka honey produced in New Zealand, and that the test was not designed to apply to Australian honey. Australian honey has a very different taste and texture.

How bees turn Mānuka nectar into honey

Worker bees collect Mānuka nectar and carry it back to the hive, where it is passed between bees and stored in wax comb. Two things then happen in parallel. Enzymes contributed by the bees begin converting the nectar sugars, and the colony reduces the water content by fanning air through the hive. Once the moisture has fallen far enough for the honey to be stable, the bees cap each cell with wax.

Almost everything that gives Mānuka honey its distinctive character is present in the nectar before this stage. The compound most associated with Mānuka honey develops from a precursor found in Mānuka nectar itself, which is why the floral source rather than anything the beekeeper does afterwards sets the ceiling on a batch. Melora explains that conversion in detail in the guide to MGO in Mānuka honey.

Why the flowering window controls everything

Mānuka producers routinely describe a very short flowering season, and figures of two to six weeks circulate widely across the industry. The botanical picture is more nuanced. Research published in the New Zealand Journal of Botany reports that Leptospermum scoparium typically flowers in spring and early summer, with occasional flowers appearing on plants at other times of the year. A quantitative study of Tasmanian Leptospermum scoparium grown in a common garden trial found that individual plants flowered for an average of roughly 36 to 46 days, while flowering across the whole stand extended considerably longer than that.

The real constraint is therefore local rather than national. At any given site the period when Mānuka nectar is available in useful quantities is short, and it does not begin on the same date every year. Beekeepers move hives into position before flowering starts and pull them out once the flow ends, because bees left in place too long will bring in nectar from whatever else is flowering nearby and dilute the batch. That scarcity is also a large part of why the honey is priced as it is, which Melora covers separately in why Mānuka honey is so expensive.

Harvest and extraction

Once the comb is capped, beekeepers remove the honey boxes and move them to a processing facility. Extraction then runs through three broad stages. The wax cappings are cut away, the frames are spun so that centrifugal force draws the honey out of the cells, and the honey is strained to remove wax and other debris.

Mānuka honey makes this harder than most honey. It is thixotropic, which means it sits as a gel when left undisturbed and only flows once it is agitated. New Zealand's Science Learning Hub notes that this property complicates factory processing, and that Mānuka honey has to be kept warm and constantly agitated in order to pass through the processing steps at all. It is the same property that makes a jar of Mānuka honey resist the first push of a spoon.

How every batch is tested before it leaves New Zealand

This is the stage most guides leave out, and it is the one that decides whether a jar can be sold as Mānuka honey at all.

New Zealand's Ministry for Primary Industries requires that all honey labelled as Mānuka for export is tested by a laboratory it recognises, against a scientific definition. That definition combines five attributes: four chemical markers that come from Mānuka nectar, and one DNA marker that comes from Mānuka pollen. It was introduced in 2018 following a three year science programme, and a review that began in 2020 concluded that no change to the definition was needed.

Two details are worth knowing as a buyer. First, the test is applied at batch level, and the Ministry for Primary Industries specifies that samples must be drawn randomly from honey that has been thoroughly mixed, so the result represents the whole batch rather than a favourable part of it. Second, the requirement applies to exported honey only. Honey traded within New Zealand is not subject to the same regime, which is one reason documentation matters when buying from overseas.

The same test also determines whether a batch is classified as monofloral or multifloral Mānuka honey. Melora sets out what separates the two, and what each is suited to, in the guide to monofloral and multifloral Mānuka honey.

From the drum to a British shelf

Honey sold in England falls under the Honey (England) Regulations 2015, with equivalent regulations in Wales, Scotland and Northern Ireland. Two provisions matter for Mānuka honey specifically.

Regulation 17 requires that the country in which the honey was harvested is stated on the label. The same regulation also governs floral origin claims, which is exactly what the word Mānuka is doing on the front of a jar. Where a product name is supplemented with information about floral origin, the honey must come wholly or mainly from that source and must possess the characteristics of it.

The practical effect is that the wording on a jar of Mānuka honey carries a legal obligation in the United Kingdom as well as a testing obligation in New Zealand. Readers who want to check a specific jar can work through Melora's checklist for telling whether Mānuka honey is genuine.

Why Choose Melora for Traceable Mānuka Honey

Every batch of Mānuka honey exported from New Zealand has to pass the five attribute laboratory test before it can carry the name, which means the grade printed on a jar reflects what testing found in that batch rather than a claim added at the packing stage. Melora carries the range in full, from MGO 40+ multifloral for everyday use and cooking through to MGO 850+ from remote sourcing sites, so you can match strength to purpose instead of guessing. Browse the full Mānuka honey range to find the grade that suits how you plan to use it.