...WITH AUTUMN TINTS.
Amsonia hubrichtii and A. tabernaemontanaNorth Americans with blue starry flowers and golden autumn foliage
Goat's beard (Aruncus aethusifolius)Gold in autumn, happiest in moist soil
AsparagusWarm yellow with red berries
AstilbesToothed and divided foliage, needs moist soil, goes gold in autumn
BergeniasSome varieties go liver red later in winter, including B. purpurascens, 'Ballawley', 'Bressingham Ruby', 'Purpurea', 'Winterglut' and 'Wintermarchen'
EuphorbiasE griffithii 'Dixter', E. polychroma and E. palustris all go reddish; 'Clarice Howard' turns a warm yellow (but is a terrible runner, so don't give it a prize position)
Gaura lindheimeriReddish tinges
Hardy geraniumsG. macrorrhizum is one of the best, turning red and orange; G. x magnificum, G. psilostemon and G. himalayense also change colour
Gillenia trifoliataNorth American native, known as Indian physic, yellow in autumn
HostasMind the slugs or you'll have no leaves in autumn
Irisfoetidissima Red berries
Lysimachia clethroidesOrange and red leaves in autumn
PeoniesMost herbaceous ones change colour Persicaria affinis Vigorous groundcover, with reddish brown leaves in autumn
Solomon's seal (Polygonatum x hybridum)Yellow in autumn, if the common pest Solomon's seal sawfly hasn't stripped the leaves
Rodgersia podophyllaMoisture-loving, stately plant (up to 150cm tall and wide), red-bronze in autumn
GrassesMany, including Anemanthele lessoniana, Molinia caerula and Miscanthus sinensis; the variegated Hakonechloa macra 'Aureola' goes reddish