Improves water retention. Reduces weed growth. Recommended for use on garden beds, vegetable gardens and in pots. Garden Basics Pinebark Blended Mulch has been blended using materials that have been specifically selected for their water retention capabilities. It is ideal to use on the entire garden including vegetable gardens and will assist in water and nutrient retention as well as in the suppression of weeds. Mulch can reduce water evaporation when used as directed, under normal weather conditions. Recommended for use on garden beds, vegetable gardens and in pots only. Can be used all year round- a new or “top up” application at the start of Spring is highly recommended.