I never thought to ask. We just needed to show the photos of us planting the trees, to , I think it was, the Barangay Captain ? All a bit of a blur now, as I was probably still jet-lagged at the time. I doubt it will be expected of Manila couples.
I believe it started after a hurricane that left an area devastated of plantation so they came up with the idea of marrying couples to plant trees to regenerate and now https://www.sciencealert.com/philip...-students-to-plant-10-trees-before-graduating and good for them