Introduce a pop of cheerful sulphur yellow in your garden with santolina chamaecyparissus or cotton lavender it39s a hardy small shrub that has fine silver fern45type leaves that remain as an evergreen all year round to give a lift to drab winter days cotton lavender is drought tolerant and is very forgiving of neglect and is suitable for all positions in the garden because of it39s tolerance to drought santolina is suitable for a mediterranean theme garden gravel gardens and pati