Rose replant disease or rose sickness or rose syndrome is well known to rose gardeners.
There are several theories why roses don’t always grow properly when placed into soil previously occupied by other roses.
The previous roses need only to have been in the soil for a few months for this issue to manifest itself.
In this scenario in the first year the new roses will often grow poorly, often the Root systems are weak or can become rotten and blackened, and as a result the roses fail to establish sufficiently well .
Several potential solutions are available as described by Thomas Stone a member of The Gardeners Guild
Professional gardener, Thomas Stone, found Mycorrhizal Fungi to be particularly affective when used on the beautiful rose beds at Mottisfont Abbey Gardens .