Envii Deep Rooter - Plant Root Stimulator and Hormone Improves Length and Mass of Plants Roots - 8.5oz Unique plant steroid stimulates longer, stronger and deeper root growth making the plant more durable to weather Increases a plants root length, giving it easier access to water and nutrients Makes plants more resiliant to dry and hot spells Ideal for allotments or where water access is limited or difficult 1 x 250ml bottle makes over 60 litres