Plants sensitive to horticultural oils.1
| Oil sensitive plants Maples | Dormant |
| Hickories | Dormant |
| Black walnut | Anytime |
| Cryptomeria | Anytime |
| Smoketree | Summer |
| Azaleas (limited) | Summer |
| Tendancy toward sensitivity | |
| Beech | Dormant |
| Japanese holly | Dormant/Summer |
| Redbud | Dormant |
| Savin junipers | Summer |
| Photinia sp. | Summer |
| Spruce | Dormant |
| Douglas-Fir | Dormant |
↵1 Taken from: Johnson (6).