Hello, Gardenia looks healthy apart from having a black coating on the leaves. It does wipe off but needs a spray to treat the problem. Can you advise what spray to use. Thank you.
01 November 2021 07:43 AM
This normally occurs due to pest activity on the stems and under the leaves.
As it is persistent, we recommend applying Yates Natures Way Citrus & Ornamental Spray. This product has the pest control and sooty mould coverage in one.
We would also recommend giving the Gardenias a good feed to assist with overall health and recovery. An all round fertiliser like Thrive Naturals Roses & Flowers Concentrate, will provide the nutrients the Gardenias need as well as assisting with recovery.