Plants in genus polygonum
Polygonum microcephalum
Polygonum microcephalum, known as small-headed knotweed, is a sprawling perennial with dramatic foliage. The 'Red Dragon' cultivar has dark purple or burgundy leaves with a silver stripe, and it produces clusters of small white flowers in summer.
Polygonum cuspidatum 'Crimson Beauty'
Polygonum cuspidatum 'Crimson Beauty' is selected for its flower color and clumping habit, growing upright to 7 feet on bamboo-like stalks. It flowers from late August to late November, with blooms changing from white to fiery red and back to white. This plant is great for drying and does not run or take over, making it a controlled choice for gardens.
Polygonum cuspidatum 'Freckles'
Polygonum cuspidatum 'Freckles' is a plant with 6-foot tall, arching, bamboo-looking stems and heavily white-speckled leaves. The leaves take on a reddish cast in full sun, and the plant produces short red spikes of flowers in September. It has shown no seedlings or running in more than 10 years.