Seeking advice on a diagnosis and treatment plan for diseased Mandevilla plants
The mandevilla plants are growing in large terra cota pots in well drained soil (potting mix) at Bundaberg on the eastern side of the house in semi/full sun, are well mulched (bark chip) and fertilised (osmocote slow release). They do well through winter and spring but then post Xmas seem to loose vigour and get diseased. Anthracnose?
Answered: 11 Mar, 2022