Please see the below chart for pH ranges for flowers.
| Name | pH | Name | pH | Name | pH | Name | pH |
| Ageratum | 6.0 - 7.5 | Coleus | 6.0 - 7.0 | Godetia | 6.0 - 7.5 | Petunia | 6.0 - 7.5 |
| Alyssum | 6.0 - 7.5 | Columbine | 6.0 - 7.0 | Gypsophilia | 6.0 - 7.5 | Pinks | 6.0 - 7.5 |
| Amaranthus | 6.0 - 6.5 | Convolulus | 6.0 - 8.0 | Helianthus | 5.0 - 7.5 | Poppy | 6.0 - 7.5 |
| Aster | 5.5 - 7.5 | Coreopsis | 5.0 - 6.0 | Hollyhock | 6.0 - 7.5 | Portulaca | 5.5 - 7.5 |
| Aubrita | 6.0 - 7.5 | Cosmos | 5.0 - 8.0 | Impatiens | 5.5 - 6.5 | Primrose | 5.5 - 6.5 |
| Baby's Breath | 6.0 - 7.5 | Cynoglossum | 6.0 - 7.5 | Lavender | 6.5 - 7.5 | Primula | 6.0 - 7.5 |
| Ballon Flower | 6.0 - 6.5 | Daffodil | 6.0 - 6.5 | Lobelia | 6.5 - 7.5 | Salvia | 6.0 - 7.5 |
| Black-Eyed Susan | 5.5 - 7.5 | Dahlia | 6.0 - 7.5 | Lupinus | 5.5 - 7.0 | Scabiosa | 5.0 - 7.5 |
| Butterfly Bush | 4.0 - 6.0 | Delphinium | 6.0 - 7.5 | Marigold | 5.5 - 7.0 | Snapdragon | 5.5 - 7.0 |
| Calendula | 5.5 - 7.0 | Dianthus | 6.0 - 7.5 | Morning Glory | 6.0 - 7.5 | Stock | 6.0 - 7.5 |
| Canterbury Bells | 7.0 - 7.5 | Euphorbia | 6.0 - 7.0 | Myosotis | 6.0 - 7.0 | Sunflower | 5.0 - 7.0 |
| Cardinal Flower | 4.0 - 6.0 | Forget-Me-Nots | 6.0 - 7.0 | Nasturtium | 5.5 - 7.5 | Sweet Pea | 6.0 - 7.5 |
| Carnation | 6.0 - 7.5 | Foxglove | 6.0 - 7.5 | Nicotiana | 5.5 - 6.5 | Sweet William | 6.0 - 7.5 |
| Celosia | 6.0 - 7.0 | Gaillardia | 6.0 - 7.5 | Pansy | 5.5 - 7.0 | Tulip | 6.0 - 7.0 |
| Centaurea | 5.0 - 6.5 | Gazania | 5.5 - 7.0 | Passion Flower | 6.0 - 8.0 | Viola | 5.5 - 6.5 |
| Chrysanthemum | 6.0 - 7.0 | Geranium | 6.0 - 8.0 | Penstemon | 5.5 - 7.0 | Wallflower | 5.5 - 7.5 |
| Clarkia | 6.0 - 6.5 | Geum | 6.0 - 7.5 | Periwinkle | 6.0 - 7.5 | Zinnia | 5.5 - 7.5 |