 | Campanula lactiflora
'Prichard's Variety'
Campanula, Bellflower |
| Herbaceous Flowers, Ground cover, Container-friendly, Spreading arching | Dark blue flowers (Summer early), Dark Green foliage |
 | Vinca minor
'Aureovariegata'
Verigated Periwinkle |
| Herbaceous Flowers, Ground cover, Container-friendly, Spreading | Dark blue flowers (Summer early), Variegated Green-Gold foliage |
 | Aster novi - belgii
'Ada Ballard'
Aster Daisy |
| Herbaceous Flowers, Spreading clump | Dark blue flowers (Summer late), Dark Green foliage |
 | Aster turbinellus
Michaelmas Dasiy |
| Herbaceous Flowers, Upright - Clump | Dark blue flowers (Autumn), Medium Green foliage |
 | Aster X fricartii
'Monch'
Michaelmas Daisy |
| Herbaceous Flowers, Rounded - Clump | Dark blue flowers (Summer late), Medium Green foliage |
 | Campanula poscharskyana
Blue Waterfall
Campanula, Bellflower |
| Herbaceous Flowers, Ground cover, Spreading | Dark blue flowers (Summer early), Medium Green foliage |
 | Eryngium tripartitum
Eryngium |
| Herbaceous Flowers, Container-friendly, Upright - Clump | Dark blue flowers (Summer), Silver foliage |
 | Salvia candelabrum
Salvia |
| Shrub, Herbaceous Flowers, Upright - Clump | Dark blue flowers (Summer late), Silver foliage |
 | Salvia lavandulifolia
Salvia |
| Herbaceous Flowers, Ground cover, Container-friendly, Spreading | Dark blue flowers (Summer), Medium Green foliage |
 | Nepeta sibirica
Catswort, Nepeta |
| Herbaceous Flowers, Herbs, Ground cover, Culinary, Spreading | Dark blue flowers (Summer, scented), Medium Green foliage |