The black soot that you see on the citrus and hedge is a sign that you have an infestation of insects. It is a type of fungus that grows on the sugary excretions of these insects. The insects could be either scale, whitefly or aphids or any other sap-sucking insect. The sooty mould itself is generally not a big problem but it is unsightly, the insect infestation will soon cause the plants to lose vigour.
Once you treat the plants for insects it should cure your problem, The sooty mould will soon subside.
Spray with an insecticide such as Grosafe Enspray 99 spraying oil. It is a certified organic spray. Mix the spray according to label instructions. Spray in the evening or early morning when it is not so hot. Spray the whole plants as best you can including as much as the undersides of leaves as you can get. Repeat the procedure in a few weeks time if needed.
This should fix the sooty mould issue!
The Palmers Team
- You must login to post comments