What role does soil health play in pest management for bonsai?
Having cultivated bonsai for over two decades, I've always paid close attention to the health of my trees, including their soil. Recently, I’ve become curious about the idea that healthy soil can bolster a plant's resistance to pests. I regularly use organic fertilizers and make sure the soil is well-draining, but I'm wondering if there are specific soil amendments or practices I've overlooked that could further enhance plant health and deter pests. My bonsai are housed in small pots with limited soil volume, and I'm concerned that even a slight imbalance could lead to pest issues. What are the best practices for maintaining soil health that I should consider in tandem with IPM strategies?