The present invention relates to methods and compositions for supplementing the soil/diet of plants in order to enhance plant growth, yield, hardening, as well as the recovery of plants which undergo transplantation. The present invention provides ribose and other pentose sugars and their derivatives, alone or in combination with other carbohydrates, electrolytes, minerals, enzymes, micronutrients, macronutrients, or other ingredients to enhance plant growth, yield, hardening, and aid in the recovery during and following transplantation.
