Ethephon has been tested on the following coniferous/dwarf mistletoe (A) and broadleaf/leafy mistletoe (B) host/parasite combinations.
| Taxon | Host | Location | References |
|---|---|---|---|
| (A) Arceuthobium | |||
| americanum | Pinus banksiana | Man. | 3 |
| Pinus contorta | CO, CA | 7,30,31,36 | |
| campylopodum | Pinus ponderosa | CA, ID | 9,32,33 |
| douglasii | Pseudostuga menziesii | OR | 32 |
| laricis | Larix occidentalis | OR | 32 |
| pusilium | Picea mariana | MN | 26,27 |
| vaginatum | P. ponderosa | CO,NM | 4,11,15,16,17,31 |
| (B) Phoradendron | |||
| macrophyllum | Fraxinus velutina | CA | 23,24,25 |
| Gleditsia triacanthos | CA | 23,24,25 | |
| macrophyllum | Fraxinus moraine | CA | 10,18 |
| (tomentosum) | Populus sp. | CA | 10 |
| Juglans hindsii | CA | 18 | |
| tomentosum | Ulmus crassifolia(?) | TX | 41 |
| Quercus stellata(?) | TX | 41 | |
| villosum | Quercus douglasii | CA | 23,24,25 |