For most of the year we think so, the Himalayan blackberries he improved and developed were meant for survival in cold, severe climates, but they got away from him and really spread in California, at least that's the myth.
They do run rampant and make a formidable security system if one is brave enough to allow that, their thorns are very damaging to skin, strange, because our goats love to munch on the trimmings.
If they get going in your garden-beds they are almost impossible to remove, abandoned properties are over-ran with them.
And we have them, in a ditch along my driveway and in odd places in the pasture. We regularly curse them when they take over, scratch the side of cars or prick your feet when wearing thin-soled shoes.
But then comes August and here are all those berries! Birds, Raccoons and bears all love them and so do we. Going for a little walk early in the morning, picking while walking and then breakfast: the pickings mixed with Greek Yogurt and flax-seed (for health) and a little cinnamon - heaven.
So we forgive old Luther B for a month or so.