Black Spot On Pitopsporum So If I Was To Have My Plants Above 30 Degrees No More Black Spot

Question

Black spot running rampant on lemmwoods

Answer 1

This will need to be treated by fungicides. Diplocarpon rosae disease is easy to control, and will require prevention, mostly.

https://www.gardeningknowhow.com/plant-problems/disease/black-spot-fungus.htm

https://www.gardeningknowhow.com/ornamental/shrubs/pittosporum/growing-japanese-pittosporum.htm