How to Mix Homemade Fruit Tree Sprays

Insect Pest Spray

• 1

  Grate 2/3 bar of soap into 1 gallon hot water and stir.

• 2

  Fill a spray bottle with this mixture once it has cooled.

• 3

  Spray any part of your fruit trees that are infected by aphids, mites or other insects. Spray during the early morning or late afternoon and evening -- times when the sun is not highest in the sky.

• 4

  Add 1-1/4 cups cooking oil and 2 tsp. caustic soda to the 2/3 bar soap and 1 gallon water mixture if the original mixture has proved ineffective. Wear gloves when handling caustic soda, as it is harmful when it comes in contact with your skin.

Fungal Spray

• 5

  Make a homemade fungal spray if you see signs of diseases like powdery mildew, black rot and brown rot on your fruit trees. Powdery mildew symptoms include white spots or powder traces on the top and bottom of fruit tree leaves. Brown rot showcases itself by causing flowers to wilt and turn brown while still remaining on the fruit tree. Your fruit tree may have black rot if you observe purple to brown specks or large spots on top of leaves.

• 6

  Mix together 3 tbsp. baking soda, 2-1/2 tbsp. horticultural oil and 1 gallon water. You can substitute horticultural oil with molasses or citronella oil.

• 7

  Pour the mixture into a spray bottle and lightly spray only the infected leaves.