Sumac Tree Height Shipped:1 2 Feet Spread: 20 – 40 ft quantitys:500 Spread: 20 – 40 ft Its berries are particularly appreciated by birds for their nutrient and energy value․ Its root systems can also be dense enough to help hold soil together‚ thereby limiting erosion along riverbanks and within wetlands․ Silky dogwood adds to the ecosystem by adding biodiversity․ It also helps filter out sediments and other pollutants from the water‚ thus adding to the overall quality of water from the area․ These combined characteristics make silky dogwood a useful species in habitat and landscape restoration․ This low maintenance tree is often seen in disturbed areas such as roadsides or woodlands but can benefit from a balanced fertilizer to help its overall health