stone said:Good question.
Not sure that tomato blight affects anything else... maybe tobacco and nicotina...
Probably an important question would be whether you planned to grow tomatoes in the ground ever again, and... whether you were talking about using this compost in containers or out in the yard & garden.
Sounds iffy for using in the vegetable patch, but probably fine for containers....
Edit: ok, just re-read your post.
Ginger, sweet potatoes sound fine... not in the same family group at all.
There are tobacco mosaic viruses that do infect other plants, [ google says... just Solanaceae].... this makes it essential to avoid letting people smoke in the garden... but... you are probably safe using this on your other potted plants.