Posted: 04/12/2016 at 15:30
I can't see any evidence of a collar on the stems so would suggest this is not honey fungus. Have a look at the leftmost mushroom in the image on the RHS honey fungus page:
If you can't see that collar on any of the stems of your fungi, I would just go ahead and plant your roses and not worry about it as most fungi are beneficial or have no effect on plants.
What I would suggest is that you dust the roots of the roses with mycorrhizal fungi such as 'root grow' which will help them to establish. I use this on all shrubs and trees I plant and, having honey fungus in my garden, have not lost any of them since using it. Whether it provides some sort of protection is a good question which even scientists can't currently answer so I can only give you the benefits of my own experience.
Last edited: 04 December 2016 15:32:47