Eastern Rocket - Sisymbrium orientale

Description

A tall, branched weed with long (up to 12 cm) narrow pods. The lower rosette leaves are deeply lobed, but the degree to which the leaf is lobed decreases up the stem. The upper leaves are unlobed. All leaves have a distinct petiole. The stems, leaves and pods are slightly hairy with unbranched hairs. The flowers are yellow, with petals about twice the length of the sepals.

Similar Species

other Sisymbrium

Identification difficulty
ID guidance

Seed-pods long and sticking out from stem, without beak, splitting into 2 valves with one row of seeds in each valve; lowest leaves lobed, upper stem-leaves divided but not pinnate; fruit pedicels a lot narrower than ripe fruit, lower part of stem with stiff hairs.  

Recording advice

Photos of leaves (basal and stem leaves) and ripe fruit

Habitat

A weed of wasteland and waste places, frequently found growing out of the cracks in city streets.

When to see it

In flower during June, July and August.

Life History

Annual.

UK Status

Occasional plant that is widely scattered over much of Britain

VC55 Status

Occasional in Leicestershire and Rutland where it is most often found in built up areas. In the 1979 Flora survey of Leicestershire it was found in 27 of the 617 tetrads.

In the current checklist (Jeeves 2011) is is Alien, neophyte, occasional

Leicestershire & Rutland Map

MAP KEY:

Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map

Species profile

Common names
Eastern Rocket
Species group:
Wildflowers
Kingdom:
Plantae
Order:
Brassicales
Family:
Brassicaceae
Records on NatureSpot:
16
First record:
01/06/2012 (Smith, Peter)
Last record:
25/05/2022 (Nicholls, David)

Total records by month

% of records within its species group

10km squares with records

The latest images and records displayed below include those awaiting verification checks so we cannot guarantee that every identification is correct. Once accepted, the record displays a green tick.

In the Latest Records section, click on the header to sort A-Z, and again to sort Z-A. Use the header boxes to filter the list.

Latest images

Latest records