Crop steering in coco coir is often misapplied due to container volume based irrigation assumptions that do not reflect how water actually behaves in flexible grow bags. This article presents a field capacity based crop steering framework developed specifically for HortGrow coco grow bags, defining shot size, dry back targets, and irrigation windows in terms of plant available water rather than nominal liters. By...

pH management in coco coir is easy and straightforward, compared to other growing substrates. Coco coir is naturally pH neutral, and has a similar cation and anion exchange, and will therefore maintain pH without an added buffer, even with strong acidic fertilizer solutions applied. Peat based substrates are naturally acidic and require chemical buffers, such as lime. And in order for those buffers to...

  Coco coir differs from other substrates in many ways, but one big difference is the anion capacity. What does this mean for nitrogen levels in your nutrient solution? The overall level of nitrogen in your nutrient solution should be based on the plant's need for nitrogen, which is dictated by the amount of photon energy received by the leaves. Higher PPFD levels mean...