Once more SPot Scotland has shown you can vastly reduce nitrogen use without seeing any negative impact on yield or crop quality. In fact, we have seen better yields when less nitrogen has been applied.
In terms of nutrition, poinsettias are one of the more demanding crops. Nutrient-related symptoms can be expressed on both leaves and bracts during both the production and marketing phases. Severe symptoms expressed later on in the growing season are difficult to correct and may result in substantial crop rejection and wastage.