Dormant oil should typically be applied to plants during their dormant period, which is usually in late winter or early spring before new growth begins. This timing helps to effectively smother overwintering pests and their eggs, as well as prevent the spread of diseases.
It’s crucial to check the specific recommendations for each type of plant and the dormant oil product you’re using, as application timing can vary depending on factors such as plant species and local climate conditions.
Applying dormant oil too late can risk damaging new growth, so it’s best to follow the instructions carefully and apply it before buds start to swell or open.
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