OMRI Listed Biomin Cal-Boro is a cost effective calcium and boron liquid fertilizer. Bio-available and non-phytotoxic to plants, Biomin Cal-Boro can be used along with your regular fertilizer program to improve fruit set and quality, improve seed formation and improve overall plant growth. Cal-Boro helps to prevent and correct mineral deficiencies. WARNING: This product contains Boron, do not apply to Boron sensitive crops. Shop All JH Biotech Products here .