How often should I replace mulch to ensure my garden thrives vibrantly and remains in an aesthetically pleasing condition? Is there a specific frequency that gardeners adhere to, perhaps influenced by variables such as climate, the type of mulch employed, and the growth patterns of the plants? Additionally, could it be that different mulch materials—like wood chips, straw, or cocoa hulls—demand varying replacement intervals? Does the presence of weeds or decomposing organic matter serve as indicators that it might be time to refresh my mulch? Furthermore, might the overall health of the soil beneath also play a crucial role in determining the optimal timing for this garden task? If I were to let it go too long without replacement, would I risk adversely affecting moisture retention and soil temperature regulation? In seeking to cultivate a lush, flourishing garden, what guidelines or best practices should one consider regarding the timely replacement of mulch?