The tree has been in a steady decline over the past five or so years and no cause has been determined (Cadwallader, B.G. 2021).

This tree formerly known as having the largest girth for the species in the world but there are now several well documented trees that are larger (NZNTT 2009).

'This tree was planted by Henry Godfrey, an early Wairau farmer and politician. This tree has potentially the largest girth of this species in the world. It has three trunks with the southern most trunk being pressured from it's vertical position by the other two trunks. The other two trunks appear to be suckers. The tree also stands on the farm property, which was the site of the first flour mill in Marlborough. This tree is frequently pointed out to tourists on the Marlborough Wine Trail'. Elwood-Smith 1989. Reference. Burstall SW. FM. Report no.21. 1974; p.12. Burstall SW & Sale EV. 'Great Trees of New Zealand' 1984; p.180.
The largest girth recorded in Australia of E. viminalis is 12.9m. The tree is located near Healesville, Victoria. The tallest known tree is at Evercreech Reserve in Tasmania. It is nearly twice the height of the Woodbourne tree at 91m (NZNTT 2015) ref. www.nationalregisterofbigtrees.com.au
Definition - manna is a white sugary sap from a predatory insect. ref; Forest Trees of Australia 5th ed. 2006 Boland et.al.