Sarracenia (purpurea venosa x catesbaei) x oreophila.
Sarracenia courti x purpurea.
Sarracenia x catesbaei in bronce.
Yellow Sarracenia x catesbaei from a locality with naturalised pitcherplants in Denmark.
Sarracenia leucophylla hybrid.
Another leucophylla hybrid. Leucophyllas are not hardy outside as our summers are too cold, but mixing them up with S. purpurea genes sure helps.
Here is another Sarracenia from the danish locality. Here the purpurea genes are obvious.
Of pure species Sarracenia purpurea purpurea forms, oreophila and flavas are the best. But mixing their genes with more tender species certainly improves the selections of what can be grown outside.