This section is from the book "The Complete Garden", by Albert D. Taylor. Also available from Amazon: The Complete Garden.
The following group contains interesting combinations of perennials which, if planted together, will produce in each case a pleasing colour effect. The perennial garden is valuable for two effects: either for a succession of bloom, or for interesting colour combinations of those flowers which bloom at the same time. The following is an endeavour to provide such combinations:*
1. Rosa foetida harisoni and Aquilegia caerulea, blue.
2. Heuchera sanguinea, coral; Aquilegia caerulea, blue; Iris germanica Kharput, purple.
3. Paeonia festiva maxima, white; Dianthus latifolius atrococcineus, crimson; Paeonia, pink (in variety); Clematis recta, white (as background) and Dianthus bar-batus, variety "Newport", pink.
4. Iris pallida dalmatica, lavender; and Thermopsis caroliniana, yellow.
5. Cerastium tomentosum, white; Linum perenne, blue.
6. Phlox Miss Lingard, white; and Campanula persicifolia caerulea, blue.
7. Phlox Miss Lingard, white; Aquilegia chrysantka, yellow; and Heuchera sanguinea, coral.
8. Hemerocallis flava, or Anthemis tinctoria kelzvayi, yellow; with Delphinium formosum or Baptisia australis, blue; or Iris Celeste, blue.
9. Hemerocallis fulva, orange with Clematis recta, white.
10. Coreopsis lanceolata, or Thermopsis caroliniana, yellow; with Delphinium in deep blue shades.
11. Chrysanthemum shasta daisy, white; Anthemis tinctoria kelwayi, yellow; and
Delphinium belladonna, blue.
12. Delphinium belladonna or hybrids, blue; and Lilium candidum, white.
13. Anchusa italic a, blue; and Anthemis tinctoria kelwayi, yellow.
14. Chrysanthemum shasta daisy, white; and Iris kaempferi in purple shades, or
Dianthus Napoleon III, crimson.
15. Monarda didyma Cambridge, scarlet; and Phlox paniculata, white.
16. Phlox paniculata, pink; Lilium speciosum, white; and Veronica longifolia subsessilis, violet.
17. Thalictrum dipterocarpum, blue; Veronica longifolia subsessilis, violet; and Anemone japonica, white.
*For common names refer to index and page references.
18. Veronica spicata, blue; and Oenothera missouriensis, yellow.
19. Eupatorium ageratoides, white; and Helenium Riverton Beauty, yellow and black.
20. Eupatorium ageratoides, white; and Chrysanthemum, Glory of Seven Oaks, yellow.
21. Buddleia (in variety), lilac, lavender, violet, purple; and Anemone japonic a, white or pink.
22. Anemone japonica, white and pink; and Aconitum autumnale, blue.
23. Aster Climax, blue; and Helenium Riverton Beauty, yellow and black.
 
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