One of the most fashionable cottage garden plants, organic Agastache Black Adder is a fantastic option for increasing the biodiversity of your beds and borders. These aromatic, eco-friendly perennials bear columns of edible, violet-blue flowers. Plant in a sunny location with free-draining soil – don’t add extra fertiliser, or the plants will get “leggy”. Cut back in early autumn for foliage that lasts over winter.
