Sow thistle / Puha
Botanical name: Sonchus oleraceus
Family name: Asteraceae
Sow thistle is an annual weed which can establish at any time of the year. It has a vague similarity in appearance to thistles while young, though doesn’t have spines like true thistles. It is also known as puha, and is eaten by some people as a vegetable. Although known as a food favoured by some Maori people and having an alternative Maori name it isn’t native to New Zealand, as it comes from Europe. (Massey University Weeds Database).