| # | Scientific Name | Common Name | Family | Origin |
| 1 | Pinus aristata | Bristlecone pine | Pinaceae | SW US |
| 2 | Pinus contorta | Lodgepole pine | Pinaceae | Western N. Am., WA |
| 3 | Pinus densiflora `Umbraculifera' | Tanyosho pine | Pinaceae | Japan |
| 4 | Pinus flexilis | Limber pine | Pinaceae | Western N. Am., WA |
| 5 | Pinus mugo | Mugo pine | Pinaceae | Europe |
| 6 | Pinus nigra | Austrian pine | Pinaceae | Europe |
| 7 | Pinus ponderosa | Ponderosa pine | Pinaceae | Western N. Am., WA |
| 8 | Pinus strobus | Eastern white pine | Pinaceae | Eastern N. America |
| 9 | Pinus sylvestris | Scotch pine | Pinaceae | Europe |
| 10 | Pseudotsuga menziesii | Douglas fir | Pinaceae | Western US; WA |
| 11 | Tsuga canadensis | Canadian hemlock | Pinaceae | Eastern N. Am. |
| 12 | Tsuga heterophylla | Western hemlock | Pinaceae | Western N. Am.; WA |
| 13 | Tsuga mertensiana | Mountain hemlock | Pinaceae | Western N. Am.; WA |
| 14 | Taxus baccata `Repandens' | Spreading English yew | Taxaceae | Europe |
| 15 | Taxus sp. | Yew | Taxaceae | Northern hemisphere; WA |
Plants repeated from Hort 231:
| R1 | Mahonia aquifolium | Oregon grape | Berberidaceae | none | Western N. Am., WA |
| R2 | Mahonia repens | Creeping mahonia | Berberidaceae | none | Western N. Am., WA |
Hort 232 Plant Lists:
| #1 | #2 | #3 | #4 |
|
| #6 | #7 | #8 | #9 | #10 |