Mustard? Safe?

[leoturt]

A few of these are growing in my yard.
Seems to be some kind of mustard?
Hard to figure out exactly which one.
The 2nd pic is from tortoise table

 

[SasquatchTortoise]

are the flowers? It might be easier to identify with.
There is an app called PlantNet, it is really helpful with plant identification

 

[RosemaryDW]

It's in the brassica family so a mustard of some kind, a radish, a cress. When it flowers it will have a four-petaled flower with yellow, white or pink blossoms. If you want to be more settled you can taste it yourself; mustard tastes well, like mustard greens! And radishes and cresses are spicy or peppery.

Doesn't really matter which as they are all safe in moderation.