A fully soluble fertiliser containing nitrogen and potassium recommended for vegetables, fruits, flowers, turf, vines and ornamentals grown in soil and soilless culture. Advantages: Campbells Nitro-K, Greenhouse Grade is a fully water soluble, chloride free fertiliser containing two essential elements for crop development providing immediately available nitrogen and potassium. Potassium Nitrate is the most readily available … Continue reading Nitro-K Greenhouse Grade