| May/June |
| Blue/Purple | Yellow/Orange | Pink | White |
Ajuga
Allium
Aquilegia
Centaurea
Iris
Lamium
Linum
Mertensia
Mazus
Myosotis
Phlox Divaricata
Phlox Stolonifera
Phlox subulata
Ploemonium
Pulmonaria
Primula
Thalictrum |
Geum borisii
Caltha
Euphorbia |
Armeria
Dianthus
Dicentra
Heuchera
Lamium
Geranium
Iris
Saponaria |
Pulsatilla
Iberis
Heuchera
Iris
Lamium |
| June/July |
| Blue/Purple | Yellow/Orange | Pink | White |
Amsonia
Allium
Baptisia
Campanula
Centaurea
Delphinium
Dracocephalum
Erigeron
Geranium
Iris
Nepeta
Scabiosa
Stachys
Tradescantia
Veronica |
Anthemis
Gaillardia
Inula
Coreopsis
Daylilies
Oriental poppy
Trollius |
Astilbe
Dianthus
Erigeron
Digitalis
Filipendula
Geranium
Lychnis
Peony
Penstemon
Pyrethrum |
Aruncus |
| July/August |
| Blue/Purple | Yellow/Orange | Pink | Red |
Aconitum
Daylilies
Dracocephalum
Echinops
Eryngium
Gentian
Hosta(some)
Nepeta
Perovskia
Phlox
Platycodon
Thalictrum roch.
Veronica |
Asceplias
Achillea(some)
Belamcanda
Coreopsis
Gaillardia
Heliopsis
Ligulaira
Rudbeckia |
Achillea(some)
Echinacea
Hibiscus
Liatris
Monarda
Phlox
Sidalcea |
Lobeila
Daylilies
Monarda(some)
Phlox
Astilbe(white)
Gypsophila(white)
Hosta(white)
Platycodon(white)
Phlox(white) |
| August/September |
| Blue/Purple | Yellow/Orange | Pink | White |
Aster
Caryopteris
Echinops
Eupatorium
Hosta(some)
Perovskia
Tricyrtis |
Coreopsis
Helenium
Kirengeshoma
Ligularia
Macleaya
Rudbeckia
Solidago |
Anemone
Aster
Astilbe
Chelone
Echinacea
Hibiscus
Physostegia
Sedum |
Cimicifuga
Lysimachia |
| September/October |
| Blue/Purple | Yellow/Orange | Pink | White |
Aster
Aconitum
Nepeta
Salvia Pitcher |
Amsonia(foliage)
Coreopsis
Rudbeckia |
Anemone
Aster |
Boltonia
Cimicifuga |
....and don't forget about ANNUALS! They'll add interest throughout the season, and make a dynamic and colorful addition to the perennial border.