Viburnum Hedge Fungal Spots: Copper Fungicide Timing

Situation

Viburnum hedge (150 plants) has yellow/brown leaves with spots. Organocide applied but rain follows daily.

Better Treatment

• Use copper fungicide (better for pure fungal issues).
• Apply early morning.
• If rain same day, reapply next morning.
• Two applications give protection despite daily rain.

Note

Persistent humidity makes fungal control difficult; focus on suppression, not eradication.