Plumtree scored a hattrick for Wellington against Northland in the opening round of the 2021 Bunnings NPC.[6]
Scarlets
On 27 June 2023, Plumtree signed for the Scarlets.[7] Plumtree made his first Scarlets appearance in a preseason friendly against the Barbarians, along with fellow new signing Ioan Lloyd.[8] Plumtree and Lloyd made their competitive debuts for the Scarlets together against the Bulls on the Scarlets’ South African tour.
[9]
On 3 July 2023, Plumtree joined the Wales squad for their World Cup training camp in Switzerland.[11] Despite representing New Zealand U20, Plumtree qualified for Wales via birth, and was not bound to New Zealand.
Plumtree made his debut on 5 August 2023, coming off the bench for Wales in the first test of their 2023 Rugby World Cup warm-up matches, against England.[12] Plumtree missed out on selection for the final squad due to a shoulder injury.[13]
On 4 November 2023 Plumtree played for Wales in a friendly against the Barbarians, coming off the bench and scoring a try.[14]
The son of former New Zealand sevens player and rugby coach John Plumtree, Taine was born in Wales while his father coached Swansea RFC, and later moved to South Africa when John was head coach of the Sharks. Plumtree also qualified internationally for South Africa, through his mother.[6] Taine and his brother Reece both attended Wellington College and played for their rugby team.[6]