It's all about compost composition
Making your landscape soil as perfect as possible isn’t just a matter of throwing compost at it. Compost composition can vary widely, and can be either fungal or bacterial dominated. It is believed that fungal dominated soils favor the growth of woody plants and perennials while bacterial dominated soils favor the growth of food bearing plants, annuals, and grasses. So you’ve got to start with an analysis of the proposed organic matter to be incorporated.