— Campanula are hardy to around -20C and can be planted straight outside in the spring. They don’t require any frost protection over winter.

— Soak the roots in water for 3-6 hours prior to planting.

— Plant the roots with the crown or buds just below the soil surface or any leaves exposed. You can plant directly into a prepared space in borders or into patio containers. Alternatively, you can plant them into temporary pots to grow on and plant out later in the season.

— Campanula grow best in a free-draining soil. If growing in containers you can use a multipurpose compost.

— Choose a position which is in full sun or partial shade.

— Space the plants 20-25cm apart from each other.

— Water-in after planting and keep hydrated when in growth.

— Deadhead after flowering.

— Cut back stems down to 3cm above soil level in autumn.

— Read further general instructions about planting bare-root perennials