smooth aster

Smooth aster needs to be watered once or twice a week, depending on the weather conditions. It prefers well-drained soil and needs to be watered deeply – so it's important to ensure that you get down to the roots. During the growing season, water should be applied evenly and slowly. Water for about 10 minutes until the soil is moist, but not soggy. In the winter, water should be reduced so that the soil remains on the dry side.

Smooth aster (Symphyotrichum laeve) needs at least 6 hours of direct sunlight every day for optimal growth. They will tolerate less sun, but will not be as productive. Full sun exposure is best and they prefer the morning sun to the afternoon sun. When planting, make sure the smooth aster is in an area that will receive a minimum of 6 hours of sun. Morning sun is best, as it can better withstand the warm temperatures of the afternoon. It should not be planted in an area that receives too much shade, as this can impact its growth and flowering potential.

Smooth aster should be pruned back to approximately 6 inches from the soil when it starts to develop a slightly woody stem. Pruning is best done in late winter, before new growth begins, or in early spring before the flowers are produced. Pruning should also be done at the same time other maintenance tasks are completed. After pruning, remove dead and damaged stems and spent flower heads. Be sure to remove any diseased stems to help prevent the spread of disease. Trim off misplaced branches and cross-over shoots so the plant can develop a healthy shape and structure.