What was the pH? Multiflora loves our acid sandy soils. But even at neutral pH, multiflora is fine.

A very expert rosarian here in Sacramento buds on multiflora rootstock, and has suggested that we use it in the cemetery if we have anything that we need to bud.
Anita

It only lasts a few years in alkaline conditions.
We were advised (and I think it was good advice) to plant quite deeply.
The idea is that the plants would take off on their own roots by the time the multiflora died.
Roses on Multiflora rootstock, here, seem to suffer as badly from Chlorosis in our conditions as
roses OF Multiflora breeding.

If I had to make a guess, I'd say the rootstock of choice for where EYE am located would be Fortuniana.
Fortuniana grows like an animal here.

Jeri

All mine on multiflora are doing very well.