Calls to the Master Gardener Help Desks about using bark mulches in the home landscape and gardens has prompted a Q&A column this week. Organic mulches are used on new plants to help them establish and lessen transplant shock. Mulches conserve soil moisture; keep weeds and grass from encroaching and moderates soil temperatures, making it easier on the limited root system. On older established plants, mulches really are there more for aesthetics.
Q: When will I know it is time to add mulch?