This image illustrates the critical steps required to transform heavy clay into a free-draining environment. Using high-quality grit and bio-stimulants is the most effective way to eliminate "Hardiness Anxiety" and ensure your specimen tree flourishes in the UK's shifting environment Is the cost of soil amendments worth it? For a mature Olive Tree , "planting into a puddle" in heavy clay is the leading cause of winter death. Investing £100 in drainage materials now saves a £1