Scale on Eureka lemon. We have sprayed with pest oil. But the scale still remains. Tree looks unhappy.
Should we respray? Or reapply pest oil? Ants are still on the tree. Leaves are yellowy.
yates
17 September 2020 02:04 PM
Dead scale will remain on the tree for some time - if it brushes off easily/is powdery, it's dead, otherwise re-spray. Consider Nature's Way Citrus & Ornamental Spray which also controls ants, to break the cycle:
https://www.yates.com.au/product/garden-pest-control/yates-natures-way-citrus-ornamental-spray
To rectify general yellowing, fertilise now with a citrus food, if you haven't already done so for spring:
Topics: Fruit and Citrus