Amethyst Falls Wisteria Wisteria frutescens 'Amethyst Falls' ORDER Planting Seeds Lerner Publishing Group The city in the shadow of an ageing nuclear reactor Mahonia 'Soft Caress' Yard 'N Garden Land MayGeum 'Mrs Bradshaw' already three weeks into flowering and showing no signs of slowing down. She should carry on right through to the end of summer. At around 50cm, she holds Giving some of your perennials a haircut in mid May can completely transform how your planting borders perform this summer. Cutting them back will give you stronger, sturdier plants with an extended flowering