Patrick Mann wrote:rhubarb, iris, mint, burdock
James Colbert wrote:Look into vetiver grass. Very very dense roots.
Sean Dembrosky wrote:I would argue against chives, oregano and thyme unless you have spent the time to fully dig out and remove all runners of the grass before establishment. I've worked with all 3 as experiments for beating out grasses and they do a poor job for me where I popped them in and hoped/expected them to beat out the grass.
What has worked with potency in holding back / beating out grass...
Comfrey, Turkish Rocket, Rhubarb, Sorrel, Sweet Cicely, Giant Perennial Sunflower, Jerusalem Artichokes, Elderberry
Sean Dembrosky wrote:Giant Perennial Sunflower is
Tiny seeds, good for wildlife. Very powerful grower for us.