With its strong mint smell and taste, this herb has found its way
into homes for centuries where it has been used in the kitchen and
as a medicine. There are many different mints; different species,
hybrids and special selections that are grown all over the world.
Most of them are water lovers and are usually found growing in wet
and damp places.
Mentha longifolia or wild mint is a fast-growing, perennial
herb that has creeps along an underground rootstock. It can reach
up to 1.5 m high in favourable conditions, but is usually between
0.5-1 m high and even shorter in dry conditions. Strongly aromatic,
the leaves are formed in pairs opposite each other along the square-shaped
stem. The soft, lanceolate leaves (long and narrow with a sharp
point) are between 45-100 mm long and 7-20 mm wide. The leaves are
usually coarsely hairy and the edges sparsely toothed. The colour
of the leaves varies from light and dark green to grey.
The small flowers of Mentha longifolia are crowded into spikes
at the tip of the stems. Varying in colour from white to mauve,
this wild mint flowers throughout the summer months (November to
Two mint species are indigenous to South Africa, Mentha
longifolia and M. aquatica (wild water mint). Both are
quite commonly found in marshes and along streams, from the Cape
through Africa and Europe. M. longifolia (longifolia
meaning long leaves) is identified by its stalkless leaves and white
to mauve flowers that are grouped in a long spike. The leaves of
M. aquatica (aquatica meaning living in water) are
broader and more egg-shaped, whereas the flowerheads are roundish
whorls (approximately 25 mm in diameter), pink or mauve flower clusters
formed one above the other.
In South Africa, three different subspecies of Mentha longifolia
M. longifolia subsp. wissi (Cape velvet mint) is
known from only two places, the one near Brandberg in Namibia
and the other near Garies in Namaqualand. The long and thin, grey-green
leaves of subsp. wissi are said to be unpleasantly aromatic.
- M. longifolia subsp. capensis (balderjan),
with a strong peppermint scent, is the most widespread and occurs
from Calvinia down to the Cape Peninsula through the Eastern Cape,
Lesotho, Orange Free State, KwaZulu-Natal to Gauteng and Limpopo
the Northern Province.
- The distribution of M. longifolia subsp. polyadena
(spearmint) is along two disjunct areas, the first from Gauteng,
Swaziland, northern KwaZulu Natal, eastern Free State and northern
Lesotho and then with a long jump down to the southern Cape, it
is found again between Humansdorp and the Swartberg.
Derivation of name and historical aspects
The large mint family, Lamiaceae, with about 250 genera and 6 700
species, include many well-known herbs and garden plants such as
like lavender, sage, basil, rosemary and mint. Mentha (Latin
for mint) is a cosmopolitan genus with about 20 to 30 species that
are mainly found in temperate regions. The identification of the
mints can be quite difficult for they are extremely variable and
easily hybridized. The many common names is a quick clue that this
is a plant that means something to people, but can also be confusing.
The same common name is often given to different plants or the same
plant may have different common names in different areas and languages.
The original Nama name meant 'something that grows close to water'
(Rood 1994). In England, Mentha longifolia is known as horse
mint because the leaves are usually unpleasantly scented.(Codd 1985).
M. spicata, also called spearmint, is not indigenous to South
Africa, but is often found as a garden escape in wet areas. This
exotic mint is a very popular herb and is also cultivated commercially
for its essential oils that are used medicinally and in confectionary.
Cultivated in Europe since ancient times, its origin has been lost
but it has managed to become naturlized throughout the world in
a range of different forms (Codd 1985).
and butterflies are attracted to the wild mint when in flower.
Uses and cultural aspects
Found in most parts of the country and easy to harvest, wild mint
is a popular traditional medicine. It is mainly used for respiratory
ailments but many other uses have also been recorded. It is mostly
the leaves that are used, usually to make a tea that is drunk for
coughs, colds, stomach cramps, asthma, flatulence, indigestion and
headaches. Externally, wild mint has been used to treat wounds and
swollen glands. In her book Traditional healing herbs, Margaret
Roberts mentions the different uses of Mentha longifolia
and M. aquatica, which are delicious in salads and vegetable
dishes. She also mentions that M. longifolia subsp. capensis,
with its strong smell rubbed onto the body and bedding, is used
to keep mosquitoes away.
Growing Mentha longifolia
its strong fragrance and many uses, it is worth finding a place
in the garden for the wild mint. Mentha longifolia is easy
to grow, with the same requirements as most mints. Mints are fast
growers but seem to be always on the move. With underground runners,
they disappear and pop up wherever they find a suitable spot. Heavy
feeders and water lovers, mints grow in semi-shade and full sun.
They do well in pots where they are contained, but need to be repotted
every year or two in new compost-rich soil. Placing the pot under
a tap is a good way of catching the small drips and leaks while
keeping the mint moist. To encourage new fresh growth, mint should
be cut back often.
Mint is easy to multiply by division; the smallest piece of healthy
rootstock quickly grows into a new clump with regular water and
compost. Cuttings of young actively growing shoots root easily throughout
- Codd, L.E.W. 1983. Southern African species of Mentha L. (Lamiaceae).
Bothalia 14: 169-175.
- Codd, L.E.W. 1985. Lamiaceae. Flora of southern Africa
28,4. Botanical Research Institute, Pretoria.
- Goldblatt, P. & Manning, J. 2000. Wild flowers of the
fairest Cape. National Botanical Institute, Cape Town.
- Goldblatt, P. & Manning, J. 2000. Cape plants. A conspectus
of the Cape flora of South Africa. Strelitzia 9. National
Botanical Institute, Cape Town and Missouri Botanical Gardens.
- Outdtshoorn, B., Gericke, N. & Van Wyk, B. 1997. Medicinal
plants of South Africa. Briza Publications, Pretoria.
- Pooley, E. 2003. Mountain flowers. The Flora Publications
- Roberts, M. 1990. Indigenous healing plants. Southern
Book Publishers, Pretoria.
- Rood, B. 1994. Uit die veld apteek. Tafelberg, Cape Town.
- Van Wyk, B. & Gericke, N. 2000. People's plants.
Briza Publications, Pretoria.
Liesl van der Walt