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

Trachyspermum is a genus in the plant family Apiaceae.

Wikipedia contributors, "Trachyspermum", CC BY-SA 4.0 — Trachyspermum

In the garden

Trachyspermum ammi (ajowan) sits in the Apiaceae and presents as a climbing, evergreen plant. Give it a sunny or partially shaded spot on loam or sand that drains freely; it tolerates a wide range of soil pH but dislikes waterlogged ground. Positioning should be sheltered and orientated to the south, west or east where possible. Rated H4 (average hardy) in the UK, ajowan will suit most gardens but performs best away from exposed, windy sites. The climbing habit means stems will benefit from a support — a trellis, arch or wall-side training will keep growth tidy and make the most of summer flowering, which runs from July to September. Its habit and requirements make it appropriate for city and courtyard settings, coastal gardens, cottage and informal schemes, patios and containers, conservatories or greenhouses, and for use as hedging, screens or on wall-side borders. For containers on a west- or east-facing patio, provide a sheltered microclimate and a secure support so the evergreen stems and summer flowers can be displayed reliably.

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