Tall Plant with Long Thin Leaves
I have an approximately 8x8' patch of the pictured plant on my new property. I'm curious what it is. I haven't seen it outside of the patch, which makes me think it's location is deliberate. However, it's right in the midst of a blackberry patch, and if it's just a weed, I'd rather it not be taking away the blackberries' growth. Any thoughts on what it is and why I should keep it around?
Here at the beginning of summer, the stalks are around 6' tall.