Weed Identification

Question

I found this weed in my veggie patch and I was wondering if anyone could identify it and maybe provide some information about it.

Key Information

• Canberra, Australia.
• Only seen in the last day.
• Garden only started 2 weeks ago.
• Garden mulched 3 days ago. (Maybe I should have weeded more thoroughly before mulching... :( )
• Roots look a bit like an onion. Most of them have been torn off though.
• Growing in the garden currently is Spinach, Spring Onion and Basil.

Answer 1

I planted some Oxalis deppei in the garden at my university last year and it looked just like your plant. It had little dark pink flowers and spread like crazy, from 15 bulbs planted in spring I got at least 50 bulbs in autumn, including smaller ones. This was on a rocky small area that somewhat contained them.