A huge catmint, dwarfing "Six Hills Giant". Thick strong stems with fragrant leaves and long spikes of purple-blue flowers in summer and autumn. For the back of a hot border or fill the corner of the courtyard to impress your visitors.
For best results, sow immediately onto a good soil-based compost. Cover the seeds with fine grit or compost to approximately their own depth. They can be sown at any time, and germination can sometimes be quicker if kept at 15 to 20 degrees C. We sow most seeds in an unheated greenhouse and wait for natural germination, as many seeds have built-in dormancy mechanisms, often waiting for natural spring germination, hence giving them a full season of growth.