Our new and improved HoloCal formula is now optimized for ease of use. HoloCal is a non-synthetic blend of a uniquely processed, natural source of calcium valuable to many crops for improving plant vigor, fruit quality, and storability. HoloCal is a NOP-compliant, liquid concentrate that can be used in transplant solutions, irrigation systems, or as a foliar spray to correct calcium deficiencies that can lead to fruit disorders.