What is the biggest disadvantage of mulching?

The main drawback of mulching pertains to the depletion of nitrogen when using high carbon sources such as fresh wood chips or straw. As these materials break down, soil microbes consume the nitrogen available in the soil, temporarily depriving plants of the nitrogen they need for growth. I have witnessed tomato plants develop yellow leaves within a short period of a few weeks, due to this paradox.

Identify the expression of nitrogen deficiency symptomology. A plant will demonstrate yellowing lower leaves and slowed growth. Vegetables that are heavily fed, such as corn and broccoli, will display these symptoms first. Test weekly as the mulch decomposes through an easy-to-do test using soil kits available at the Local Farmer's Market.

Factors linked to regional factors can affect nitrogen depletion. In wet climates, decomposition occurs more quickly. Therefore, amendments are needed more frequently, compared to dry regions, where the process may slow considerably. I similarly adjust my approach in differing seasons, such as utilizing a double dose of amendments in rainy springs in my home garden.

Alternative mulches completely avoid this situation. Compost mulch provides a balanced combination of nutrients without nitrogen loss. Grass clippings provide a quick release of nitrogen, but only if the grass has not been treated with chemicals. My method is to layer both types of materials in combinations to provide a continuous supply of nutrients during the growing season.

Use these recommendations before you mulch your vegetable beds. When mulching, be aware of the balance of carbon materials and nitrogen sources that apply to your mulch. Your plants will exhibit bright green growth, along with weed suppression and enhanced moisture retention.

Read the full article: Mulching Vegetable Gardens: Ultimate Guide for Success