Black Cardamom

Black cardamom (Amomum subulatum), called badi elaichi or bari elaichi in Pakistan, is the smoky, larger cousin of green cardamom — the pod that drops into nihari, korma and karahi pots across the Punjab and gives them their depth. POWO records its native range as Nepal through Assam, Bangladesh, the East Himalaya, China and Myanmar,¹ which means in Pakistan it is strictly a KPK hills crop, not a plains one.

Where it thrives

It is a tropical to subtropical hill plant that wants hot, humid shade — temperatures roughly 10 to 35 degrees, heavy ambient humidity, and a tolerance for wet feet that lets it sit near streams and seepage lines.² The Sikkim and Darjeeling belt where it has been cultivated for over a century sits at 600 to 2,000 metres with 3,000 to 5,000 mm of annual rainfall.³ Within Pakistan, the wettest mid-elevation valleys of upper KPK — Shogran, Naran approaches, Kaghan, parts of Swat — give the closest match. Anywhere below 1,000 metres in Punjab or Sindh is too hot, too dry and too sunny.

Role in the system

Black cardamom sits in the secondary stratum as a tall reed-like shrub clump under a canopy. In its home range it is almost always grown under a nitrogen-fixing nurse — most famously Alnus nepalensis, whose leaf litter feeds the cardamom and whose nitrogen returns can run into the high hundreds of kilograms per hectare.³ Treat it the same way in a Pakistani guild: never plant it in open sun, always under a deciduous N-fixer that drops mulch through the rains. It is itself not a fertility builder; it is a shaded-niche cash crop that depends on the canopy and the litter layer above it.

Growing it

Decisions worth getting right. Propagate by suckers from the rhizome of a mature mother clump, planted out at the start of the monsoon under 50 to 70 percent shade; seed is slow and uneven.² Space 1.5 to 2 metres each way and mulch heavily with leaf litter — the rhizome is shallow and dries out fast. Keep soil moist year-round; the plant tolerates near-saturated ground but not stagnant water. Yields are elevation-sensitive: low-elevation cultivars peak below about 1,500 metres and high-elevation cultivars above that, so match the cultivar to the site rather than fighting the contour.⁴ Flowering happens at the base of the clump in spring; pods are ready about five months later, harvested by clipping the inflorescence and curing over a low smoky fire — the smoke is the flavour.²

What you get

The product is the dried, smoke-cured pod — wrinkled, dark brown, the size of a small olive — used whole in slow-cooked Pakistani meat dishes for a deep camphor-pine note. A mature plantation reaches full yield by year four and can stay productive for 15 to 20 years.² The seeds also carry documented traditional use in Ayurvedic and Unani medicine for digestion and circulation,² which is why Pakistani hakims keep them in stock alongside the kitchen trade.

Sourcing notes

Source rhizome suckers from a Sikkim or Darjeeling-origin nursery via a verified importer rather than from random pod stock — the dried pod cannot be used to propagate. Plant under an existing alder, sesbania or albizia canopy on a north-facing KPK slope with reliable seepage. Build a small smoke-curing shed before the first harvest; the cure decides the price.

Sources

1. Royal Botanic Gardens, Kew (2024). “Amomum subulatum Roxb.” Plants of the World Online.
2. NC State Extension (2024). “Amomum subulatum (Black Cardamom, Large Cardamom).” North Carolina Extension Gardener Plant Toolbox.
3. Sharma, G. et al. (2002). “Performance of an Age Series of Alnus-Cardamom Plantations in the Sikkim Himalaya: Nutrient Dynamics.” Annals of Botany.
4. Lepcha, P. et al. (2023). “Elevation determines the productivity of large cardamom (Amomum subulatum Roxb.) cultivars in Sikkim Himalaya.” Scientific Reports.