Overview

Trachyspermum ammi is a plant with a climbing habit in the genus Trachyspermum, part of the Apiaceae family, with evergreen foliage. Trachyspermum ammi grows best in full sun and partial shade, and tolerates loam and sand soils and any pH. Its UK hardiness is rated H4. Suggested uses include city and courtyard gardens, coastal, cottage and informal garden, patio and container plants, low maintenance, conservatory and greenhouse, hedging and screens and wall side borders.

About

Trachyspermum ammi, commonly called Ajowan, is a climbing member of the Apiaceae with evergreen foliage. It favours full sun or partial shade on well-drained loam or sandy soils and tolerates acid to alkaline pH. Best placed in sheltered, south-, west- or east-facing positions, it carries a UK hardiness rating of H4 (average hardy). Flowering occurs from July to September.

About the genus

Ajwain or ajowan —also known as ajowan caraway, thymol seeds, bishop's weed, or carom—is an annual herb in the family Apiaceae. Both the leaves and the seed‑like fruit of the plant are consumed by humans.

Growing conditions

Best soil and position for Trachyspermum

Sunlight
Full sun, Partial shade
Soil type
Loam, Sand
Soil pH
Acid, Alkaline, Neutral
Soil moisture
Well-drained
Aspect
South-facing, West-facing, East-facing
Exposure
Sheltered
UK hardiness
H4

Plant details

Trachyspermum ammi size, habit and characteristics

Habit
Climbing
Foliage
Evergreen
Suggested uses
City and courtyard gardens, Coastal, Cottage and informal garden, Patio and container plants, Low Maintenance, Conservatory and greenhouse, Hedging and screens, Wall side borders

Care notes

Pruning and caring for Trachyspermum ammi

Propagation
Layering, Semi-ripe cuttings
Pest resistance
Cushion scale, Mealybugs, Glasshouse red spider mite
Disease resistance
Honey fungus

Frequently asked questions

Where is the best place to plant Trachyspermum ammi?

Trachyspermum ammi prefers full sun and partial shade. It suits sheltered positions.

What soil does Trachyspermum ammi need?

Trachyspermum ammi grows best in loam and sand soil. It is happy in soil of any pH. Aim for soil that stays well-drained.

Is Trachyspermum ammi hardy in the UK?

Trachyspermum ammi has an RHS hardiness rating of H4, meaning it is hardy through an average UK winter, tolerating -10 to -5°C.

How do I propagate Trachyspermum ammi?

Layering, Semi-ripe cuttings.