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Tomato Leaf Spray

The common tomato plant is a member of the nightshade family. This famous family of plants contains other favorites of humans such as potatoes and chilli peppers and has been cultivated for food for thousands of years. But they have other uses as well.

The nightshade family contain a wide range of alkaloids (poisonous compounds) in their leaves, stems and unripe fruit. Some of these are desirable and some are harmful to humans but some others can be used as an insecticide and weak fungicide. Releasing these compounds can be accomplished by cutting or crushing the leaves and steeping them in filtered water over night.

This brew should then be clearly labeled and treated with caution. Anyone allergic to any plants in the nightshade family should avoid contact or exposure to this spray. Wear gloves, safety glasses and stand up wind when applying. Also note that tomato plants, including the fruit in large doses, can be toxic to dogs, so make sure all pets are kept away from this spray as well.

To make Tomato Leaf Spray you will need:

  • 1 - 2 cups of crushed or chopped tomato plant leaves
  • 1 - 2 cups of filtered water
  • Cheese cloth or fine strainer
  • Spray bottle

Where to start:

  1. Cut your tomato plant leaves up, wear gloves and clean up often
  2. Soak the the leaf cuttings overnight in your filtered water, use a 1:1 ratio of leaf matter to water. 
  3. Filter the leaf "tea" with your strainer or cheese cloth. 
  4. This will probably be overly concentrated so add another 1 cup per 1 cup filtered water to it
  5. Place the liquid into a spray bottle and use where needed.

Using Tomato Leaf Spray:

Spray where the infestation is occurring and repeat as needed. Remember to rinse the plant before consuming if its an edible.

Use for:

Any insect affected by alkaloids especially aphids.

Special Notes:

  • A very small number of people have shown an allergic reaction to the nightshade family, if you are or suspect you might be use extreme caution making and applying this.
  • The leaves of the tomato plant can reportedly make people very sick and it has been claimed that it has killed livestock that ate it. Again USE CAUTION with this stuff. Read more about it.