BD #501 – also called Horn Silica. Applied in early morning. It is an aid to photosynthesis and enhances flavor and nutritive qualities of plants. It also supports the keeping capacity (longevity after harvest) of vegetables, fruits and flowers.

NOTE:  If you order only Horn Silica and we can fit it in a small flat rate box or envelope, we will credit your credit card at least $6.5o for reduced shipping after you place your order.