Design challenge: specimen tree
We recently lost our beloved maple to verticillium wilt and are looking for another specimen tree to replace it. We wanted to put in a redbud tree, since we have one at the back of our house that is beautiful, but unfortunately redbuds are not resistant to verticillium wilt. We live in a Zone 5 area (central WA), the soil is slightly alkaline, this site gets morning light only (until the tree gets larger than the house)
I contacted a nursery, which suggested the following verticillium wilt resistant choices, which I have annotated with potential issues (but then may not since I have little experience):
Cercidiphyllum Heronswood Globe - size
Sorbus aucuparia - size, flowers malodorous, likes acidic soil
Betula nigra Fox Valley/Little King - likes moist acidic soil, more shrub-like
Malus Velvet Pillar - highly susceptible to apple scab, potentially messy, does best in full sun.
We would really appreciate any feedback or any other suggestions for a specimen tree. We tried a larch in this spot, but that didn't really work.