I planted 3 sea buckthorn plants about 6 years ago, and now have a nice little thicket (they do sucker, but nothing like blackberries, and they will invade grassy areas if you let them). I'm in NW Oregon, so we get a lot of rain, some snow and ice, then a hot dry summer, and they handle all of it. They're prolific at my place, so I harvest by cutting branches, freezing them, then knocking the berries off. Then I process them in a stovetop steam juicer, which makes quick work of them. I freeze the juice and then combine with apple juice for drinking, which makes a very refreshing drink. They are absolutely a great hedge for keeping out unwanted humans and larger critters.
