Overview

Sinapis alba 'Sibelius'PBR is a bushy annual biennial in the genus Sinapis, part of the Brassicaceae family, with deciduous foliage. Sinapis alba 'Sibelius'PBR grows best in full sun, and tolerates loam soils and neutral pH. Its UK hardiness is rated H4. Suggested uses include wildlife gardens.

About

Sinapis alba 'Sibelius' PBR is a bushy cultivar of the Sinapis genus, which comprises annual herbaceous plants commonly grown for mustard production. This deciduous plant thrives in full sun and prefers a south-facing, exposed position with well-drained, neutral loam soil. It flowers from May to September, producing bright yellow blooms that attract wildlife, making it suitable for wildlife gardens. The plant is hardy to UK zone H4 and grows best in fertile, moist soil. Propagation is by seed, and it provides seasonal interest throughout summer and autumn.

About the genus

Sinapis is a genus of plants in the family Brassicaceae. As of July 2025, three species are accepted by Plants of the World Online:Sinapis alba L. – white mustard, formerly Brassica alba Sinapis flexuosa Poir. Sinapis pubescens L.

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

Growing conditions

Best soil and position for Sinapis

Sunlight

Full sun

Soil type

Loam

Soil pH

Neutral

Soil moisture

Well-drained

Aspect

South-facing

Exposure

Exposed

UK hardiness

H4

Plant details

Sinapis alba 'Sibelius'PBR size, habit and characteristics

Plant type

Annual Biennial

Habit

Bushy

Foliage

Deciduous

Suggested uses

Wildlife gardens

Care notes

Pruning and caring for Sinapis alba 'Sibelius'PBR

Propagation

Seed

Pest resistance

Flea beetles, caterpillars

Disease resistance

Clubroot

Frequently asked questions