Neem Oil % For Rust On Fuchsias And Do I Need An Emulsifier To Mix It With Water ?

Question

I have found out what to to do . Its just the % of Neem Oil to one litre or strength.

Answer 1

One teaspoon of neem oil to one quart of water is the common measurement. The best way to mix it is with warm water and a few drops of dish soap. You should check the label on your oil, however, to determine the strength, and use more or less depending on the instructions. Only mix up what you intend to use immediately, as it will lose its potency if it sits too long.
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm