It’s important to consider ways of repelling insects that don’t involve harmful chemicals and there are natural alternatives that won’t impact the environment negatively.
One way to keep insects out of your garden is by growing herbs. Herbs encourage the good bugs to come and the strong smell helps repel the pests. An example is basil which normally accompanies tomatoes, helping to attract bees which help pollinate tomatoes.Basil also repels whitefly and experts say it can make tomatoes smell better and larger.
Aphids are another pest that can be naturally repelled by growing phacelia. This plant will attract hoverflies and bees, and control aphids.
Dill is also useful and marigolds can deter white flies. Find out more http://www.weeklytimesnow.com.au/country-living/gardening/jillian-logan-basil-dill-and-phacelia-make-ideal-natural-pesticides/news-story/f4b5e3f04183b267d0df58cca699b7c7