Hollands Hope (Dutch Hope) was one of the very first cannabis strains that was bred and selected specifically to mature successfully outdoors in the variable Dutch climate.
Power Plant's origin is as a South African sativa which has had a little tinkering genetically-speaking along the way. It was released in Holland in 1997 and Dutch Passion has the original version.
Purple #1 is a 50/50 indica/sativa marijuana strain that was bred in Holland. It was the result of crossing a Purple Afghan with various indica and sativa strains during the 1980s.