Posted at February 24, 2011 in News by JHPS Gardens
Sap Sucking Pests
Stickiness on the foliage of citrus plants can be an indication of sap-sucking insects, on which black sooty moulds often develop. Pests such as soft scale, mealybugs and aphids are all usually found on the underside of leaves and the stems.
Soft Scale
Mealybugs
Aphids
Oval, yellow-brown scales or shells up to 3mm long. They cluster around leaf veins and stems.
Greyish-white insects3mm long. They often infest the leaf axils and cover themselves and their eggs in with a white, waxy substance.
Usually green and feed on shoot tips and flowers.
 
Glasshouse red spider mite and the citrus red spider mite both affect citrus plants but are distinguished from one another by examination under microscopes. The predatory mite Phytoseiulus persimillis gives good control over glasshouse red spider mite, however it does not prey on citrus red spider mite.  
Treating plants against pests
If fruit from plants is to be eaten, restrict pesticides to organic types. Contact sprays need several applications. If fruit is not eaten, plants can be sprayed with synthetics such as deltamethrin.
If you have any further questions on Pests that affect Citrus plants or any other pests then please contact JHPS and we will be happy to help with your gardening problem. Please contact us on: –
Free Phone: 0800 0937 926
Head Office: 01782 396168