Are you really asking about the soil situation here in the Botany Forum, or is this just about using your new word for the day? I think the answer that was given in the shrub forum is probably a good one, but, depending on the specifics of the situation, you might have a little more of a chance of it working than Laceyvail described. BTW, I think the word is actually supposed to be "inosculate".

So, does anyone know if Viburnum spp. and Amelanchier spp. (shallow root trees) can be grown in only a few inches of soil above bed rock (9" soil)? My concern is that in winter, the roots will not be insulated from freezing and will be damaged or killed; zone 6b: down to around 5 bellow zero.

I agree with Laceyvail and Esh_ga's thoughts in the Shrub Forum post.

Here is a link that might be useful: Same Question / Different Forum

If you do try it, as Esh_ga said, start small. A seedling would probably have a better chance of become adjusted to the situation than a larger specimen.