You should pot the B&B plants immediately. Those severed roots need to be wrapped in a great potting mix, not in burlap. As with all plantings, set the root ball in the new medium at the same grade it was in the nursery. Don't 'bury' it with potting mix.

Thanks, rhizo_1, - will do.

As usual, I agree with Dorie. At a minimum you should at least heal them in and mulch well if you choose not to pot now. If you do choose to pot them now, may I suggest that you secure them so that there is no (or minimal) movement of the plants in relationship to the container? Securing the plant will allow establishment in new soil in a fraction of the time it takes for unsecured plants to get their feet under them.

Al

Hi, Al-

I'll pot them this week. I'll secure them like you say - is this a recommendation you make especially for B&B trees, or for any newly repotted plant? I assume these B&B trees were dug out of the soil, so a great part of their rootball is gone - makes sense to want to encourage their rootactivity. Plus they are pretty big in relation to the rootball, so there would be much more movement...
Schusch

Applies to all plant material, but especially to the woody perennials that have plenty of canopy and show tendency to be moved about by the wind. I also find that B&B plants seem to want to sway more in relation to the container than their container-reared counterparts.

Al