This year, an effort reduce the mold and fungus problem II replaced the
sprinkler heads with a drip irrigation system. I put 2 coils of soaker hose
around each rose, underneath the mulch. This way the water goes straight
down into the soil, rather then moistening the mulch.

Try a drip system, that might help, it saves water, and delivers it in the
right spot.

Snooze