Brunnings 100% Organic Pea Straw Mulch is 100% Pea Straw compressed into a bale. It is a premium mulch because of its many benefits to the soil. As it breaks down over many months it adds nitrogen and nutrients to the soil. Brunnings 100% Organic Pea Straw Mulch is the ideal protective barrier that assists in moisture retention. This reduces the frequency of watering and prevents damage to plants from water stress. It also provides organic matter to the soil encouraging beneficial organisms and earthworm activity leading to improved soil health and healthier plants.