Ajwain (carom)

Trachyspermum ammi

A lacy annual with thyme-scented seeds; chewed or steeped after rich meals across South Asia.

Type: herb or perennial · annual vegetables, herbs and grains
Hardiness: zones 5 to 11
Light: full sun
Size: about 2 ft tall, 1 ft wide
Harvest: August to September
From: Western Asia and India
Drought-hardy once established
Here: Hardy in the Lake Erie shore climate (zone 6b to 7a), so it can live outdoors in the ground.

Good for: food, pollinators, traditional use, Ayurvedic tradition.

Native to: South & Southeast Asian tropics, Mediterranean. Hardy in zones 5 to 11.

The story

Ajwain, or carom, is a lacy annual in the carrot family whose tiny seeds taste strongly of thyme. In Indian kitchens it flavours breads and fried snacks, and a spoonful chewed after a heavy meal is a household digestive.

Planting

Full sun and well-drained soil. Sow seed directly in spring after frost; it needs a long warm season, so start early in short-summer places.

Growing

Thin to about 6 inches and water lightly. The umbels of white flowers draw hoverflies and small wasps.

Harvest and use

Cut the seed heads when the seeds turn grey-brown, dry them on paper, then rub out the seed. Store dry in a jar.

What to watch for

Damp weather at flowering, and heavy clay.

Safety

Medicinal uses here are shared as history, not advice. Kitchen amounts are fine for most people, but teas, tinctures and supplements can interact with medicines and aren't safe for everyone, especially in pregnancy, while breastfeeding, for children, or with liver or kidney problems. Ask a doctor or pharmacist before taking any plant as medicine.

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More annual vegetables, herbs and grains

General guidance, not professional advice. Conditions vary by yard and year; for local specifics ask your county extension office. Never eat a wild plant you cannot identify with certainty. Traditional uses are shared as history, not medical advice. © 2026 Sean Priest · Irie Orchard. Terms & credits · Privacy · Home