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Hi all... need help identifying this plant that sprung up in my brassica bed. It has shot up in between my buk choy and is thriving. Wasn't sure whether it was a weed or not, so I let it grow a little so it may become more identifiable.
Unfortunately I still haven't seen anything else in the garden like it. However some pretty yellow flowers have bloomed on it. Ideas on whether I should keep it or weed it?

[url=https://img831.imageshack.us/I/pa130208.jpg/][img]https://img831.imageshack.us/img831/5148/pa130208.th.jpg[/img][/url]

[url=https://img821.imageshack.us/I/pa130210.jpg/][img]https://img821.imageshack.us/img821/1746/pa130210.th.jpg[/img][/url]

(apologies for the slight out-of-focus 1st pic)

I believe that is Easter Cassia (Senna pendula 'glabrata'). It's a shrub considered to be invasive in your area.

You can find more information [url=https://www.dpi.qld.gov.au/4790_7252.htm]here[/url].

D-OHH!! I'll have to pull it out asap! it's funny that there aren't any other cassia like it in the garden... Thanks for the ID once again Kisal. You really are a bit of a garden sleuth!

Thanks for the info on that one Kisal it will definitely help with future weeding efforts.