This month the Royal Pavilion Garden Volunteers chose the Symphytum Caucasicum otherwise known as Blue Comfrey.
It is a herbaceous perennial Caucasian Iran. It grows in moderately fertile moist soil both in full sun and partial shade. It is a woodland edge, ground cover plant, which can be invasive. Its leaves make a good nitrogen fertilizer. Insects love it! You can find it in abundance at the moment in the Pavilion Gardens, and there is a particularly great spot for it at the North end entrance area to the gardens.