White Oil spray
Use for sap sucking insects, mealy bug, aphids, two-spotted mite, citrus leaf miner, whitefly and scale. Apply to woody plants. The pests are suffocated by the spray. Neem is an alternative organic spray that is also used for these pests.
In a bottle mix 1/2 cup dishwashing detergent with 1 cup cooking oil (check the oil is not GM). Seal the bottle and shake until white. This is your concentrate.
To use, dilute 1 tbsp of spray in 1 litre water. Spray over the affect areas. Apply every 3 weeks until the problem is fixed Don’t use if temperatures will be over 30ºC or if it’s windy. Best sprayed on an overcast day.
To read the rest of Action and jobs to do in the garden with tips from Leonie Shanahan, Helen McKerral and Penny Woodward check out our latest issue, which is onsale now in newsagents or visit Organic Gardener.
By: Leonie Shanahan
First published: July 2019