Question: I am used to adding compost and other additives to my garden every year. Should I use standard soil amendments (compost, redwood) with your products? Answer: The idea behind John and Bob's GrowGreen Smart Soil Products is that you don't need bulky amendments such as compost or redwood. Our product line is more effective, less expensive, and much more convenient because of the billions of soil micro-organisms that fundamentally change the soil. So no, other soil amendments aren't necessary.