Hapu'u Pulu: How low can it go?

[Mitzi M]

I'm trying to figure out the elevation "limits" of hapu'u in lower Puna. I heard from a pretty reliable source that historically it ranged all the way down to just before the salt spray here. I've seen it healthy well makai of Pahoa and even a couple in Kaimu. I know they'll need some shade here where it's warmer and maybe supplemental water. It would be great to return some of them to part of their former range, but their numbers have been so drastically reduced that I'd hate to put them where they'd be doomed. Anyone have luck at lower elevations? (200-300'- Kalapana, Kehena, lower Opihikao, Kapoho, Hawaiian Beaches?)