I love to do this...I think bermuda grass is my 'knapweed'. I will let anything grow to try to out compete it. Comfrey will hold it's own and I don't see much in the mint and raspberries. I've planted sunchokes in several spots but they are young yet.
Along the edge of this property is a small branch of a creek. On both sides it has honeysuckle, privit, english ivy, vinca and bittersweet thoroughly taking over.....I'm not really sure which is winning but I think the bittersweet is doing the most damage to
trees. I don't see hardly any poison ivy though. I forgot, there is also trumpet vine. Sometimes I think about planting a bamboo in that area just to see what would happen.
"We're all just walking each other home." -Ram Dass
"Be a lamp, or a lifeboat, or a ladder."-Rumi
"It's all one song!" -Neil Young