Growbar is a cleverly curated seed collections nestled in neat, fertile coir bars, ready to grow plants easily. Just add water! Grow beautiful bee friendly blooms to create a buzz in your garden. Grow hyssop, catananche and sweet rocket from this Bee Growbar. How to identify your seedlings: Hyssop seedlings have small green oval shaped flat leaves. Hyssop has deep tubular flowers - well known as a bee keeper's favourite. Catananche seedlings have long and thin grass like leaves. Displays an abundance of nectar-rich blue flowers that bees adore. Sweet Rocket seedlings have long stems and rounded leaves. A pretty biennial, bearing white or purple flowers similar to honesty.