conrad wrote:That looks great Chris, after wanting it for ages I managed to get some myself while in Cornwall last year.
I've wondered about the possibility of crossing it with some of the others like glauca, agavoides, shaviana etc to see if hardiness would transfer to their progeny, there's the problem with rosea flowering at a different time of year so pollen would need to be stored, it also looks a bit fiddly!
Do any of you guys know if this is workable and if it's worthwhile endevour to attempt, or if it has it been tried before?(I'm sure it has!)
Hi Conrad. Yes it is perfectly possible and not actually as fiddly as you would thing. They flower for a very long period usually up until mid June for me and by then the other echeverias have kicked in. I have three rosea crosses, one is my own hybrid and has proved to be very hardy, echeveria 'adonis blue', it is a hybrid between e. rosea & e. pulidonis. I have had it planted out with no protection for 3 years now and it has coped without problems for me down to - 8. It looks like e. pulidonis but on steroids getting to about 2 - 3 times the size.
While that one is good for hardiness, a more interesting one looks wise is a hybrid between e. rosea and e. coccina This looks like a more more stocky version of rosea and goes the same red colour. Sadly it is tough to find, so you need to know someone who happens to have a spare bit going ;) Because I have been building my stock I have not fully tested its hardiness yet, a couple of bits did well in my dry green house down to -7 this winter.
I also have a rosea x agavoides hybrid which is ok but hasn't really shown the hardiness or the looks of the others. The problem with agavoides hybrids is that they are famous for just looking like agavoides. I have tied several agavoides crosses and the only one that I think has any potential is a cross with e. deresina which has much larger flowers than agavoides normally has and is a paler colour.
I'll post pictures later