Depending on whether the quantity of soil to be mixed in is a large or a small amount. For large amounts like for the backfill around trees and the shrubs use 2-5 kg of TRUE HYDROGEL/m3 or 1 litre of soil. For smaller quantities of soil, use 5 grams of TRUE HYDROGEL for 1 litre of soil. The soil needs to be thoroughly watered after treating with TRUE HYDROGEL. Around 50-150 grams of the TRUE HYDROGEL can also be used on new or seeded turf by using sower machines.