Hi all

I'm about to plant a cherry tree and apparently they hate heavy soil..
I will buy the tree this weekend as they're having a bare-root sale at
the nursery I'm going to.

I'm planting it in a raised bed, so I can make the soil be as good as
the tree needs it to be, but eventually the roots will need to go into
the soil beneath the bed.. And probably won't, if it's mostly clay..


What are some suggestions?

Can I dig a hole and fill it with compost and rotted manure and
potash, or is it too late?
By the time the roots get to it, it might have aided to condition the
soil around, right?

Please advise!