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valadelphia

Affect of soap and oil spray for whitefly on leaves

veeta
9 years ago

I have a white fly infestation in my garden, primarily affecting Brassica plants. Because I am saving seed, I left these plants in the garden long after spring. I am now collecting seeds and cut most of the plants to the ground, but the komatsuna (mustard spinach) is still producing, and the Brussels sprouts have sent out side shoots that I would like to leave through winter. Ditto on the kale. I have been spraying a mixture of soap (Dr. Bronners), water, and olive oil onto the lower leaves. I will soon be planting my fall crop of Brassicas, so I need to get this under control and have been spraying every few days.
So, my actual question is about the sprayed leaves. The oil (I assume) is leaving a waxy film on the leaves (I try to just spray bottom but that is difficult). Should I remove these leaves, or just let them be?
Can anyone who has used a similar spray advise me if I am proceeding correctly?

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