1 Salvia nemorosa 'Caradonna’ from the mildly aromatic silvery green leaves to the violet flower spikes with purple stems. Bees love the flowers that stay looking sharp long after the petals fall, thanks to papery bracts that hold their colour. Dead-heading – either little and often or in one go – encourages new flowering side-shoots till October. 'Caradonna’ loves sun; use it as a purple ribbon through late season grasses or, at 18in (45cm), it is the perfect centrepiece for a pot.
Dierama pulcherrimum, Blackbird. Full sun and in a warm, sheltered spot. Flowers June to August. Angel's fishing rod is perfect for introducing movement to a well-drained border in a sunny, sheltered site, or for overhanging water. Initially slow to establish, it looks particularly good with early autumn-flowering ornamental grasses. More: http://www.crocus.co.uk/plants/_/dierama-pulcherrimum/classid.2694/
Camassia leichtlinii Alba Camassia leichtlinii Alba is a statuesque late-spring flowering bulb with spires of creamy-white flowers which last for ages. One of the most tolerant and long-lived bulbs you can grow. They're ideal for being happy in sun or light shade, for naturalising.