Should I remove the old mulch, or is it wiser to leave it in place? How does the age of the mulch affect its efficacy in terms of moisture retention and temperature regulation within the soil? As seasons change, could the decomposition of the old mulch contribute beneficial nutrients to the surrounding plants, or might it instead harbor pests and diseases that could jeopardize my garden’s health? In contemplating this decision, what are the potential benefits of rejuvenating my landscape by refreshing the mulch layer, and how frequently should this practice be undertaken to ensure optimal growth? Additionally, could the aesthetic appeal of my garden be enhanced by introducing new mulch over the older, perhaps less visually appealing, material? Ultimately, what factors should be considered when weighing the pros and cons of old mulch removal versus replacement, especially in terms of the specific plants and local climate conditions at play?