Dahlia Festival

www.kelmarsh.com Kelmarsh Hall and Gardens, Northamptonshire

2 and 16 September

A celebration of the varied and vibrant display of dahlias found in the hall’s historic walled kitchen garden. As well as dahlia clinics for enthusiasts, there will also be dahlia-focused talks and demonstrations, including flower-arranging in the hall’s newly-restored Orangery and tours of the property and gardens. With a further 20 new varieties being introduced last year, this is a must-see collection for any dahlia lover.