[GordonJ]

I have raised some plants of Isoplexis canariensis and now in 150mm pots here in Tasmania.How frost tolerant is this plant, we can often have frosts of minus 3 and 4C with occasional minus 5C rarely down to 6C but not often . I do have a structure in which I grow Clivia if needing protection or a shadehouse under tall Eucalyptus which would give some protection as well.
GordonJ

[Alisdair]

Gordon, it sounds as if it would be touch and go for you. San Marcos Growers in California (very good people) say that they've found it OK down to about -2 deg C. If you've a sheltered spot for it, I think it would be well worth trying it outside, as otherwise your climate should suit it really well - not so different from Tenerife's.