| for shade | 4 | purpose |
| in containers | 3 | location |
| for attracting butterflies | 2 | purpose |
| perennial → be → great | 11 |
| perennial → be → excellent | 4 |
| perennial → be → good | 3 |
| negative | neutral | positive |
| 0.014 | 0.105 | 0.881 |
| Raw frequency | 18 |
| Normalized frequency | 0.338 |
| Modifier score | 0.500 |
| Perplexity | 169.163 |