Hardy to 20 degrees. Space plants 6 to 12 in. Plants spread by runners. Hardy to -40 degrees. Space 12 to 18 in.
Plants form a velvety green carpet and can grow into a hump.
To flatten, you should cut a narrow strip out of it and press the plant back down. Hardy to -20 degrees. Space plants 6 to 10 in. This rapid-spreading creeper thrives in continually moist soils. Hardy to -40 degrees.