Tomato Leaf Spray

Plants belonging to the nightshade family, like tomatoes, potatoes and tobacco, have significant amounts of toxic compounds called alkaloids in their leaves. These toxins are water soluble and can be soaked from chopped leaves and made into home-made sprays. Their toxicity, however, may account for only part of their effectiveness. The sprays also attract natural pest enemies that follow powerful chemicals in these plants as cues in searching for prey.

Protection Offered: Tomato leaf sprays have been used to protect plants from aphids. Also, spraying tomato leaf spray can reduce cutworm damage. A scientific study has shown that plants sprayed with tomato leaf spray attracted significantly more Trichogramma wasps to parasitize moth eggs than the unsprayed plants did.

Mixing Directions: Soak 1 to 2 cups of chopped or mashed tomato leaves in 2 cups of water overnight. Strain through cheesecloth or fine mesh, add about 2 more cups of water to the strained liquid, and spray. How to Use: Spray plants thoroughly, particularly undersides of lower leaves and growing tips where aphids congregate.

*Note While this spray is not poisonous to humans on contact, use care in handling, especially if you are allergic to the nightshade family.