Fertilizers and organic compounds such as peat moss and compost can be advantageous for perennials, trees, and shrubs. Peat moss is particularly useful for retaining water and nutrients in the soil, without it draining away upon watering. However, due to its acidic pH, it's important to use appropriate amounts of peat moss, so that the pH balance of the soil is suitable for the plants and trees growing in that specific location. Peat moss doesn't need to be replaced annually since it doesn't compact like other fertilizers and compost, which also allows for good soil aeration and nitrogen fixation. It's best to apply peat moss to sandy soils or those that struggle to retain water.

On the other hand, compost is beneficial because it replenishes and provides the soil with essential nutrients and microorganisms that positively impact plants and trees. It also increases soil stability and water retention. Compost is relatively neutral on the pH scale, making it a practical addition to soil and garden mixes that nourish plants and trees. While compost should be applied annually, peat moss can be replenished every 3-5 years. It's important to note that peat moss shouldn't be used as a mulch since it can drain water and nutrients from the soil, making it difficult for plants and trees to thrive.