Inkarho rootstocks can in theory have any Rhododendron variety grafted onto them. After quite a lot of excitement when they were introduced several trials suggested they only extended the pH range slightly. An RHS study [why have the RHS not got this on their web site?] showed no benefit at pH 8. An...
But the fronds on the Bigger plants are extremely hairy so I would assume that yes it probably is an australis. I don't think that is right. Cooperi is furry and australis is roughly warty on the stipes [as Arlon has shown]. Good pictures of both [and almost any information you could want on potent...
Ficus auriculata. I keep buying seed, but [like everyone else] I get no plants. It is pollinated by a specific wasp that only exist in its native range, and commercial seed seems to come from outside of that area! I was after Saurauia madrensis and Passiflora macrophylla but I now have seeds of thos...