help with blackcurrant and raspberry bushes

Hi Every one.

I recently bought 15 raspberry and 6 black currant bushes, they arrived last Friday but due to family circumstances I couldnt collect them from the post office until yesterday, so I have them all having a big drink in buckets in a cool room.  I was going to plant them out this morning but it was very frosty.

If its frost again for the next few days, how long will they be safe in the buckets.  Some them have lovely shoots and I dont want to loose them.

Many thanks for any advice
Julie

I put mine in this morning, as DD says they will be fine.