White Mustard - Sinapis alba

Description

Medium to tall, bristly plant. Leaves all pinnately lobed and stalked. Flowers yellow 18 to 25 mm. Fruits 20 to 40 mm.

Identification difficulty
ID checklist (your specimen should have all of these features)

The pod and the leaf shape are diagnostic features.

Recording advice

Please provide photographs showing the leaves and seed pods as well as the flowers. (RPR)

Habitat

Grown for its seeds which are used to make the condiment mustard, also as a fodder crop, or as a green manure. It is sometimes found as a casual on rubbish tips, disturbed ground or along field margins.

When to see it

Flowering June to August sometimes later.

Life History

Annual

UK Status

Widespread but rather local in Britain.

VC55 Status

Scarce in Leicestershire and Rutland but may be increasing in our area.

It is listed on the current VC55 Rare Plant Register (Hall and Woodward 2022) as Locally Rare 

Leicestershire & Rutland Map

MAP KEY:

Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2025+ | 2020-2024 | pre-2020

UK Map

Species profile

Common names
White Mustard
Species group:
flowering plant
Kingdom:
Plantae
Order:
Brassicales
Family:
Brassicaceae
Records on NatureSpot:
2
First record:
31/10/2022 (Nicholls, David)
Last record:
08/07/2024 (O'Brien, Helen)

Total records by month

% of records within its species group

10km squares with records

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