houttuynia cordata or bishop's weed
Either one is impossible to eradicate!!**^^$%& the bishops weed in my hillside is caught up and under Hypericum that i planted to hold the hill up. The houttuynia I bought years ago and have spent way too much time since then trying to get rid of it. Last year I put roundup in a can and painted it onn the leaves...but saw some damage to plants I love. I see nurseries are still selling it as an herb.