Rose Gardener Disease Management. Mites can be carried by wind currents from infected roses to healthy plants downwind. Sporotrichosis is a relatively rare infection caused by the fungus sporothrix.it occurs when.

The black spot is the most common and important disease occurring on any rose plant (1). Pulmonary and disseminated infections, although rare, have also been reported. Managing plant disease organisms without the use of conven­ tional chemical fungicides or bacteri­ cides can sometimes be a challenge even to the most avid home gardener.

On multiflora and other wild roses.

Black spot is caused by a kind of fungus called diplocarpon rosae, usually attacking the plant foliage. Managing plant disease organisms without the use of conven­ tional chemical fungicides or bacteri­ cides can sometimes be a challenge even to the most avid home gardener. Read here for info on how to treat witches broom in roses. For less severe lung disease, we recommend itraconazole (200mg orally twice daily) for at least 12 months.