The stunningly beautiful cornflower, Centaurea cyanus
, so much used these days in wildflower mixes, can reduce inflammation in a variety of conditions - the flowers are the only part used and can help with conjunctivitis and mouth ulcers.
Species good for cutting are Cosmos of all forms, but try Cosmos 'Double Click' and 'Psyche White'; aster, bedding-dahlias, godetia, clarkia, sweet William, Brompton stocks, sunflowers, Rudbeckia hirta 'Kelveden Star', Rudbeckia hirta 'Green Eyes', Rudbeckia hirta 'Prairie Sun', Scabiosa 'Ebony & Ivor', Coreopsis grandiflora 'Early Sunrise' and Mayfield Giant', Sweet-smelling Resedia odorata, Crepis aurea, Gaillardia pulchella, Centaurea cyanus
(cornflowers) and Larkspur.
Grow the black cornflower (Centaurea cyanus
`Black Ball'), which lasts longer in water than other varieties, or the velvety annual scabious (Scabiosa atropurpurea).