The Rooibos You Buy Has Its Own Variety Name

Call it rooibos and you have only named the species. The specific plant growing in nearly every commercial field, selected, replanted, and cut on a schedule since the 1930s, carries its own separate identity: the Nortier type, the Rocklands type, or, in the word actually used on the farms, mak tee, tame tea. The wild population it was bred from has its own story. This one is about the tame variety itself: its names, what actually makes it look different from its wild parent, and how far that separate identity runs, right down to the official botanical record, where a whole taxonomic group carries the name of the man who bred it.

Three names, one bush

The plant behind your cup is not a random sample of Aspalathus linearis. It is a specific, repeatedly propagated selection, and depending on who you ask, it goes by one of three names. Cederberg growers call it the Nortier type, after the Clanwilliam doctor who developed it. Botanists writing in the peer-reviewed literature more often call it the Rocklands type, after the district where much of the founding seed was gathered, or simply the red tea type. A 2003 chemical survey spanning the species' many wild stands, published in Biochemical Systematics and Ecology, states it plainly: "the main constituent of the commercial tea type (also known as the Rocklands type or the red tea type) is a unique dihydrochalcone, aspalathin" the paper reports, a single sentence that names the same plant three ways and points to the specific compound, aspalathin, that marks it chemically.

Then there is the word actually used on the farms. Klipopmekaar's own history of the industry records that the cultivated selection became known locally as mak tee, tame tea, describing Nortier's own selection outright as "the so-called mak tee," set against the semi-prostrate wild bush still cut from the mountainside by hand. Tame is the right word. A wild rooibos bush is left to fend for itself in the fynbos. The tame variety is planted in rows, watched for four seasons, and cut on a schedule.

What tame looks like next to wild

Line the cultivar up against its wild parent and the differences are not subtle. Klipopmekaar's own botanical account describes the commercial form plainly: "the habit is erect and robust, the leaves bright pale green and the flowers invariably yellow," a description that also matches the plant's chemical fingerprint: aspalathin, the same compound the 2003 paper names as the tame variety's main phenolic, though a few wild populations barely carry it at all. The wild plant is nowhere near so uniform: botanists call the species polymorphic, some stands sprawling low and prostrate, others standing upright, the leaf color and flower shade shifting from one wild stand to the next depending on which of the several genetically distinct wild types you happen to be looking at.

It is also short-lived on purpose. Klipopmekaar's own account puts the cultivated bush's working life at five to fifteen years, and closer to five in practice today. A wild bush, left alone, can be harvested for fifty years or more. That trade is not an accident of poor breeding. Botanists call it a reseeder: cut it back hard or burn it and it will not resprout from the root the way some wild forms do; the only way a reseeder returns at all is new seed germinating from bare, burned ground. Growers accept the shorter life because a reseeding, uniform, upright bush is far easier to plant in straight rows and cut on a predictable cycle than the sprawling, resprouting forms found wild in the mountains.

A narrow enough base to be one "super plant"

How narrow is the selection? A 2020 study in the journal BioTech, which sequenced gene activity across the rooibos species complex, states the ancestry outright: "the commercially cultivated rooibos plants (Nortier/Rocklands type) descend from successively selected wild Red type plants originally collected from the northern parts of the Cederberg Mountains and the Pakhuis Pass areas," the paper reports. The same study found something else worth knowing about the plant it sampled from a commercial field: it "displayed a typical 'super plant' phenotype," one of the largest plants in the field on both harvest occasions, surviving the dry summer months unaffected, and consistently producing high amounts of polyphenols. In plain terms, the entire commercial crop traces back to individual wild plants that already stood out, and growers kept propagating from the ones that kept standing out.

The farm names that rarely make the story

The people who did the choosing are usually reduced to one name, Nortier, but his 1930s trials leaned on two working farms most retellings never name. Klipopmekaar's history and Gorelik's ethnographic history both name Nortier's partners as the farmers Oloff Bergh and William Riordan, and the first plantings ran on Riordan's farm, Klein Kliphuis, roughly fourteen kilometres (about nine miles) northeast of Clanwilliam, and on Bergh's Varkfontein, in the Pakhuis mountains further west. The fuller story of how Nortier gathered his founding seed is its own piece. What belongs here is simpler: the variety was not bred on one man's field alone. Two neighbors lent the ground, seed came in from nearby Rocklands and Grootkloof, and Bergh and Riordan are the two names most accounts of the story skip.

Even the botany carries the name

The clearest sign of how distinct botanists consider this cultivar and its wild relatives is not a nickname at all. In his 1968 revision of the genus Aspalathus, the botanist Rolf Dahlgren grouped rooibos and its close relative A. pendula into their own subgenus and named it Nortieria, the 2003 phenolic survey confirms in its own review of the classification. A subgenus is a formal rank in the official naming of plants, not a farmer's shorthand, and this one was built specifically to hold the red bush and named for the doctor who turned it into a crop. Almost nobody who steeps a bag of rooibos will ever type the word Nortieria. It sits in the taxonomic record all the same, the closest thing botany has to putting a grower's name on the label.

So the next time someone calls it simply rooibos, the fuller answer is available. What actually grows in nearly every commercial field is the Nortier type, the Rocklands type, mak tee to the people who farm it, and, on paper at least, a plant so tied to one breeder that its own scientific classification says so.