Aluminum foil wrapped around the base of plants such as tomatoes confuses insects and may drive them away.
For mite control, combine 1/2 cup buttermilk with 4 cups of wheat flour in 5 gallons of water. This "pancake mix" spray will suffocate the tiny pests.
Cabbage worms will literally explode after they eat flour that has been sprinkled on developing cabbage heads.
Martha Stewart says that coil a piece of copper wire around the base of your plants will give slugs such a shocking experience that they will not comeback.
Intersperse your roses and vegetables with "insect repelling" plants such as onions, garlic, and chives.
Cultivate favorite plants of Ladybird beetles (ladybugs) and praying mantis or purchase them although both of these helpful insects will only stay in an area where there is plenty to eat. If you have only one or two lightly infested rose bushes, do not expect your helpers to stick around.