| Hi shelair, Since you're living in Spain you should first be careful about some virologic diseases that are prevalent there such as tristeza, stubborn etc.If I were you I would try to find citrus that are grafted in the wild rootstock Poncirus trifoliata.It has been shown to be very resistant to lots of viruses. If you can't find that and you only find rootstock of C.aurantium, then it's OK. I personally haven't tried any Satsumas but some characteristics of them are: 1)Miyagawa Wase.A variety with big fruit, rich in juice, no seeds, early crop 2) Okitsu Wase. rich in sugars fruit,vivid groth of the tree 3) Hayashi Ushu.late crop variety,exceptional quality of fruit, long shelf life 4) Silverhill.medium fruit, thin peel, rich in juice, no seeds 5) Sugiyama Unshu.big fruit, thin peel, rich in juice, much sugars As far as tangerines(true) there are some varietes that have shown good productivity and are therefor used commercial.Some of them are; 1)Clemendin(Algeria, SPA-63, Israel,Poros) 2)Dancy Tangerine 3) Ellendale 4) Encore 5)Fairchild 6)Fortune 7)Fremont 8)Kara 9)Kinnow 10)Ponkan 11)Wilking 12)Ortanique But I think that Satsumas are the hardiest Tangerines withstanding as down as -9,5 C Hope it helps |