Brassicas

in progress updating this page

I see a lot of brassicas self-seeding in the urban environment. I find identifying them challenging. My first step is always documenting the plants, some I can identify, some I can't - yet but I am determined to.

Black Mustard (Brassica nigra)

May 2019

Brown Mustard (Brassica juncea)

seen January 2020

fruits

Charlock (Sinapis arvensis)

May 2019

a couple weeks before the charlock was in bloom

close-up of the buds

wider view of the charlock

Eastern Rocket (Sisymbrium orientale)

May 2019

mid-May 2019

Flixweed (Descurainia sophia)

June 2019

Marsh Yellowcress (Rorippa palustris), seen by the side of the Sainsbury's in Camden Town

Shepherd's Purse (Capsella bursa-pastoris)

Thale Cress (Arabidopsis thaliana)

Rocket but not sure which specifically (wall rocket? perennial wall rocket?), self-seeded from another large patch nearby which is bare at the moment but maybe had been sprayed with weedkiller (prevalent throughout Camden).

Winter Cress (Barbarea)

mid-May 2019

a week later buds are more visible

close-up of the buds

not sure if this is the same as the one above, seen March 2019

Unknowns

I saw this in Castlehaven Park, August 2019.

This was in my back garden, possibly from birdseed, June 2019.

This is growing next door and I see it over the wall between our gardens but not close enough to examine as closely as I'd like. It comes back every spring and covers the garden. I must pick a sample next year. May 2019