Mona Lavender Mona Amethyst is a stunning plant known for its dark green leaves with purple undersides and spikes of lavender-coloured flowers. Growing up to 60cm, it is perfect for borders, containers, or shaded garden areas. Mona Amethyst thrives in partial shade and prefers well-drained soil. This low-maintenance plant is ideal for adding a touch of colour and elegance to your garden.