They’re also available in many different sizes, ranging from dwarf 40cm to 1.5-2m giants. Shapes vary from balls and pompoms to simple daisy and anemone. You can grow dahlias from seed or tubers – ...

BBC Antiques Roadshow expert Siobhan Tyrrell was left gobsmacked when one guest revealed she was almost going to through her jewelled brooch in the bin – despite its impressive valuation. The popular ...