Elettaria cardamomum – Malabar Cardamom
Elettaria cardamomum, also known as green cardamom (Malabar), is a tropical rhizomatous perennial from the ginger family (Zingiberaceae) and a source of one of the world's most valuable spices. It originates from the humid monsoon forests of southern India and has been used for millennia in cooking, medicine, and perfumery. For growers, it is both an ornamental plant with aromatic leaves and an opportunity to have your own home-grown spice.
Synonyms and Nomenclature
The species was described in its current combination by W.G. Maton (1811), with the basionym Amomum cardamomum L. The Kew POWO database lists several synonyms; the most common include:
- Amomum cardamomum L. (basionym)
- Alpinia cardamomum (L.) Roxb.
- Cardamomum officinale Salisb.
- Cardamomum verum Oken
- Matonia cardamomum (L.) Stephenson & J.M.Churchill
- Zingiber cardamomum (L.) Stokes
- Amomum repens Sonn.
- Cardamomum malabaricum Pritz.
In English, the plant is known as green cardamom, true cardamom, and Malabar cardamom; in Polish, it is called kardamon malabarski, zielony, or prawdziwy. Historically, the genus was sometimes broadly included within Amomum.
Botanical Description and Appearance
It is a herbaceous rhizomatous perennial, growing in clumps and spreading via underground rhizomes. In the wild, it reaches 2–4 meters in height, while in pot cultivation it remains much shorter (usually 0.5–1.5 m). The leaves are lanceolate, distichous, 40–60 cm long, with a long pointed tip and a distinct aroma when crushed.
The flowers are small, white to pale violet, arranged in a loose spike; in the Malabar variety, the inflorescences trail along the ground, while in the Mysore variety they grow upright. The fruit is a three-angled, yellow-green capsule containing 15–20 dark, strongly aromatic seeds – these seeds are the spice.
Growth Rate and Frost Resistance
The plant grows slowly to moderately fast and is perennial; it usually takes several years from sowing to flowering and fruiting, and fruiting can be rare and uncertain under indoor conditions. Cardamom is strictly tropical and does not tolerate frost – the safe minimum temperature is about 10°C, below which the plant dies back to the ground. It corresponds to USDA zones 10–11; outdoor cultivation in Central Europe is not feasible.
Cultivation in Temperate Climates
Cardamom is grown as a houseplant. The key is a semi-shaded to shaded location with diffused light – direct, harsh sunlight burns the leaves because in nature the plant grows in the forest undergrowth. It requires high air humidity (optimally 60–80%), which in a dry home is provided by misting or a humidifier, and fertile, humus-rich, well-draining soil kept consistently slightly moist.
The optimal growth temperature is around 22–30°C. In summer, the plant can be placed in a shaded, sheltered spot, and in winter it is moved to a bright room with a minimum temperature of 12–15°C, reducing watering but not allowing the root ball to dry out.
Cultivation from seeds
Sowing cardamom is demanding. The seeds are short-lived and germinate best when fresh, so the freshness of the seed material is the main factor for success. Before sowing, it is worth soaking them for 12–24 hours in warm water. Germination requires warmth (22–30°C) and high humidity under cover and is long and uneven – usually lasting 30–90 days, with some seeds sprouting even later.
Uses and who it’s for
Cardamom seeds are one of the world’s most important spices: whole or ground, they are used in curry, rice, baked goods, masala chai, Arabic coffee, and desserts, widely in Indian, Middle Eastern, and Scandinavian cuisine. Traditionally, they are also used in herbal medicine for digestive ailments. This plant is for exotic hobbyists and collectors of spice plants who want to grow their own spices; due to the demanding sowing process, it is recommended for patient and more experienced growers.
Interesting facts
Cardamom is sometimes called the third most expensive spice in the world, after saffron and vanilla. It was used in ancient times – probably in Ayurvedic medicine from around the 4th century BCE, making it one of the oldest known spice commodities. There are three natural varieties of green cardamom: Malabar, Mysore, and their hybrid Vazhuka.
Summary
Elettaria cardamomum is a charming utility-collector plant – aromatic, exotic leaves, a history dating back to antiquity, and the possibility of growing your own valuable spice. It requires shade, warmth, and high humidity, and sowing from seeds can be a test of patience, but for spice plant enthusiasts, it is one of the most interesting home projects.
