Planting Blackberry Plants

Question

I want to plant a couple of blackberry bushes in my backyard near my wooden privacy fence, and within 15 feet of a couple walnut trees. Is this going to be a problem? They will be in full sun at least 75% of the day, early morning to probably 4:00 pm when the walnut trees will start shading them. Do I need to purchase 2 different types to cross pollinate? Thank you.

Answer 1

This should be fine, provided the walnuts are not black walnut trees, which are allelopathic. You do not need another type for pollination.