The controlled release fertilizer for growing compact plants. Osmocote Exact High K is ideal for pot plants, perennials, container nursery stock and bedding plants. Using our innovative DCT technology*, the Osmocote Exact High K range shows higher efficiency and ultimate performance. DCT optimizes the timing of nutrient release, enabling programmed release, so that is matches the plant's need perfectly. Plant safety is maximized even when the fertilizer is applied in warm conditions (greenhouses or tunnels).