Garden pests are one of the few things I find frustrating about
gardening. Whether it's the snails taking over your lettuce or the
aphids sucking on your roses — it's definitely annoying — but not a
reason to fret and reach for harmful, toxic sprays. They might
eliminate the pesky culprits, but they are harmful to you and the
environment. Instead, try whipping up one of these simple recipes with
ingredients you most likely have on hand.
What You Need
Spray bottles
Biodegradable liquid dish soap
Lemon or orange essential oil
Cooking oil
Baking soda
Garlic
Chili powder
Water
Instructions
Natural Insecticidal Soap Spray
This is by far the spray I reach for most often. It's easy to make
and keep on hand, and should take care of most of those annoying common
pests such as aphids, mites, white flies, thrips, and mealy bugs. It
kills them by attacking them at the skin, suffocating and therefore
eliminating them. I like to add a few drops of orange or lemon
essential oil, which is in itself a natural insecticide, especially
effective against ants and scale, and it also helps the the spray stick
to your plants.
1 1/2 tablespoons of liquid soap
1 quart of water
A couple drops of orange or lemon essential oil
Use a biodegradable, liquid soap (such as Murphy's oil soap, castile
soap or Ivory), to make the mixture. Add water and essential oil to the
spray bottle and shake. Spray your plant thoroughly, making sure you
cover the underside of the leaves as well.
All-Purpose Garlic Chili Spray
Pepper and garlic are both natural insect repellents and will help to
repel Japanese Beetles, borers, leafhoppers and slugs. Garlic also
deters larger pest like deer and rabbit.
Natural Insecticidal Soap Spray (from recipe above)
1 tablespoon of chili powder (you could also use fresh or dried hot peppers)
5 cloves of garlic, crushed and cut roughly
Allow garlic and chili powder to steep overnight. Strain and pour
into a spray bottle. Add Natural Insecticidal Soap Spray. Should keep
for a couple weeks.
Baking Soda Spray
This spray is great for treating plants with fungal diseases. There
is nothing quite as frustrating as discovering your plant has an
unsightly case of mildew, a type of fungal disease. Suddenly your
beautiful green cucumber and squash leaves are replaced by patches of
grayish-white blotches.
1 tablespoon of baking soda
1/2 tablespoon of oil
2 quarts of warm water
Add baking soda and oil to a cup of warm water until it dissolves.
Mix in the rest of the water. Before attempting to spray and treat your
plant, remove the most severely damaged leaves first. Then spray your
solution, repeating every few days until it disappears. This mixture is
best made and used immediately.
Additional Notes: It's best to spray your plants in the
morning, before the sun is too hot or you run the risk of burning the
leaves of your plant. And while these spray are non-toxic and less
harmful than commercial pesticides, they will kill beneficial bugs along
with the harmful ones. I recommend using these sprays sparingly, only
treating the infected plants.
Its been a very cool spring. And now, very wet. Don't remember when I've waited so long to set out tomatoes. 
