good out door strain for the uk?

any body know of a constent producing out door stain, prefably an sativa. wanna get prepared and start collecting some seeds for next season.
some thing that grows like crazy and it relativly easy to gro. the bigger is better.

thanks

Early Pearl, Early Riser, Early sativa, Early Bud, Early Queen lol well you get the picture EARLY. Or any other strain bred for northern climates that finshes in September before the rainy season. Or else you risk a serious chance of losing your crop to the elements.

nice one man