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Wellness Mama » Blog » Natural Home » Organic Pest Control for Gardens (Natural Options)

Organic Pest Control for Gardens (Natural Options)

May 28, 2019 (Updated: October 7, 2019)   —  by Katie Wells

how to prevent and control pests in organic gardens

Reading Time: 6 minThis post contains affiliate links. Click here to read my affiliate policy.

Gardening can be a great way to save money and eat the freshest food available, but it can also come with its fair share of frustrations. From pests to proper watering, there are a lot of factors involved, especially if you are using organic methods to avoid chemicals. Garden pest control is a constant battle in an organic garden but your body (and the environment) will thank you!

Fortunately, there are several ways to wage war against pests without resorting to pesticides. Companion planting, proper spacing, and natural methods of disease and pest control can ensure a healthy garden production without the need for nasty chemicals.

Organic Garden Pest Control: Is It Possible?

Controlling pests in the home garden is possible, but I’ll be honest… it takes some work! Nothing crushes your gardening dreams finding your cabbages chewed to bits overnight.

Step 1: Be Proactive!

Take the time to walk through the garden for 5 minutes every day. This is called “scouting.” Look at the plants, turn over the leaves, and check the soil for signs of any current or potential pest damage — eggs, larvae, chewed leaves, etc.

If you see any signs of damage, act immediately. And yes, if you really want an organic garden, that may mean hand-picking and even squishing bugs. I prefer the soapy bucket approach. If you find adult bugs or larvae that like to munch, remove them (or the leaf any eggs are attached to) and put them in a bucket of soapy water.

While hand-picking bugs and other pests out of the garden isn’t practical for a large-scale problem, if you use the steps for organic pest control above you hopefully will prevent any out-of-control situations.

Frequent and close observation means you’ll be ready with one of the following natural remedies before disaster strikes!

Step 2: Use Companion Planting

organic plant spacing and companion plantingSome plants have natural properties that help others grow and deter pests when planted close by. Making use of these natural properties is a way to increase production in the garden and fit more plants into a smaller space. The following are a few popular companion plants:

  • Basil planted with tomato improves production and flavor. Basil is also good for peppers and has been said to repel mosquitoes. I plant basil throughout the garden for its aroma and beneficial properties.
  • Borage is a great companion for tomatoes and cabbage as it repels both tomato horn worm and cabbage moths. It also helps strawberries and is beneficial to practically everything in the garden. I plant throughout.
  • Chamomile is a great companion for cabbage, cucumbers, onions and all the brassicas. It improves flavor and is a great herb to have on hand. It attracts beneficial insects and has delicate and beautiful flowers.
  • Dill is also great planted with cabbages, cucumbers, lettuce, and more. It improves flavor, helps repel pests, and is useful in making homemade pickles! It can get pretty big so I plant in the middle of cucumber beds. (Don’t plant with tomatoes!)
  • Catnip is another great herb to grow and have on hand. Planted near squash and cucumbers it will repel squash bugs and aphids. Steep the dried leaves in a tea to help sooth the stomach, and spray the tea on plants as a pest control spray!
  • Radishes can be planted throughout the garden and under plants like cucumbers to deter cucumber beetles.
  • Marigolds planted throughout the garden help prevent nematodes and repel pests. They will flower all summer as long as you keep pulling the dead flowers off.
  • Nasturtiums are also great companion flowers to tomatoes, cucumbers, cabbage, and more. The flowers are edible and can be added to salads. They benefit melons and squashes as well.
  • Onions can be planted freely throughout the garden but help keep pests away from cabbages, broccoli, tomatoes, strawberries, peppers, cucumbers, and more. Intercropping a few with all of these plants can greatly reduce garden pests.
  • Sunflowers are great companions and beautiful throughout the garden. Plant with cucumbers, beans, and vining plants to provide a trellis. They are hardy and a great trap crop for aphids and other pests. They typically produce plenty of their own seeds to use next year.

There are many other great companion plants. Check out this chart for some other ideas.

Step 3: Use Plant-Based Natural Insect and Pest Repellants

how to keep garden pests away naturallyCompanion planting is helpful, but if you’ve already planted and are having trouble with pests, some other natural solutions can be helpful:

  • A tea or solution made from powdered kelp will help deter Japanese beetles and aphids and is also nourishing to plants. Spray once a week or so before and during infestation times.
  • A garlic and hot pepper spray (see recipe below) repels many garden insects and wildlife pests. It is probably the most inexpensive option to make at home and isn’t harmful to you while applying. Use once a week or more for several weeks before and during infestation times.
  • A tea made with lemon balm repels squash bugs and aphids. Apply 2 or more times a week as needed.
  • A solution of several teaspoons of baking soda dissolved in water can help prevent and treat fungus and powdery mildew on plants. Use as a preventative and acute treatment as needed.
  • Powdered diatomaceous earth is a good all-purpose prevention and treatment for any insect pest, but use with caution as it kills indiscriminately. I use DE mainly if I see slugs or larvae of any insect on plants, as it is especially effective on these. Just sprinkle on plants as needed and reapply after watering or rain. (Note: I buy food-grade DE and also use it for indoor pests like ants and as an internal cleanse for parasites in humans and animals. This is the brand we use.)
  • Neem sprays are an increasingly popular pest control option and are available in many stores now.

Hot Pepper Garden Pest Spray Recipe

This is my go-to homemade garden pest control spray and it works really well!

Ingredients:

  • 2-4 cloves of garlic
  • At least 4 hot cayenne (or hotter) peppers
  • 2 TBSP olive oil or other liquid oil
  • 1 TBSP liquid castile soap like Dr. Bronners
  • 2-3 cups hot water
  • blender (I use my Vitamix)
  • towel, strainer, or cheesecloth

Instructions:

  • Put garlic, peppers, oil, soap, and water in a blender and blend on high for several minutes.
  • Leave in a bowl or pitcher overnight or for at least 12 hours to intensify the effects of the garlic and peppers.
  • Strain through towel, cheesecloth, or strainer and store in a glass jar.
  • To use, pour about 2 TBSP in a 16 ounce spray bottle (or 3 TBSP in a 24 ounce) and shake well.
  • Spray directly on plants as needed… I recommend wearing gloves!
  • Use as often as needed for preventative and pest-controlling effects.

If you don’t want to make your own they do make store-bought natural pepper sprays but I prefer the homemade version to avoid the paraffin wax they contain (made from petroleum). That said, it’s still better than spraying your garden with pesticides! Just be sure to wash produce well and also use a vegetable wash.

Step 4: Help Plants Stay Healthy by Fertilizing

Strong plants resist pests more easily too, so growing strong and healthy plants is an important step in protecting your garden from pests.

  • Kelp tea is not only a great way to naturally control garden pests, it is also a great foliar spray that nourishes plants when sprayed on the leaves (just don’t spray during the heat of the day). Sprinkling powdered kelp around plants can also have a nourishing effect.
  • Nettle tea is another plant-nourishing option to spray on plants, or add dried nettle leaf directly to the soil or compost.
  • Yarrow flowers can be made into a tea or liquid mixture and used to water plants for extra nutrients. You can also just sprinkle yarrow flowers throughout the garden and they are said to have a pest-repelling effect also.
  • Fish emulsion is a natural fertilizer that can be sprayed on the leaves of plants to help promote growth. It is especially good for tomatoes. It smells awful but is very effective!
  • Bone and blood meal (like this) are high in nitrogen and very fertilizing to plants. They are also somewhat controversial since they are animal products. Organic options are available and can be great if you are comfortable using them.

Step 5: Use Row Cover

Many flying pests see your garden as their ideal egg-laying station! Keep moths and other bugs from landing on your plants by using row covers. Floating row covers (basically fabric stretched over wire hoops) let light and water through but keep out pests who want to snack on devour your precious produce.

Row covers are quite practical in small gardens and even extend the growing season a bit. It isn’t necessary to cover everything, but particularly vulnerable crops like potatoes, squash, and cabbage will benefit.

Do you garden organically? What are your best tips and tricks for garden pest control?

Preventing bugs, insects, and other pests in an organic garden is a chore. Here's some natural ways to help keep them at bay.

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Category: Natural Home

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About Katie Wells

Katie Wells, CTNC, MCHC, Founder and CEO of Wellness Mama and Co-Founder of Wellnesse, has a background in research, journalism, and nutrition. As a wife and mom of six, she turned to research and took health into her own hands to find answers to her health problems. WellnessMama.com is the culmination of her thousands of hours of research and all posts are medically reviewed and verified by the Wellness Mama research team. Katie is also the author of the bestselling books The Wellness Mama Cookbook and The Wellness Mama 5-Step Lifestyle Detox.

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Reader Interactions

Discussion (60 Comments)

  1. Pooja

    June 1, 2015 at 1:37 AM

    Hi Katie, We see that you have mentioned use of Diatomaceous Earth as a natural pest control solution. Would you be able to point us to some good information on using DE for home gardens as well as farms? We are currently promoting use of DE in India vis-a-vis other chemical solutions and believe that our readers and customers can benefit a lot from your information.

    Reply
    • Jen

      June 8, 2018 at 7:52 AM

      Make sure that you use a mask when applying DE. It is not good for the lungs to breath in the dust and on a windy day it’s hard not to!

      Reply
  2. Deborah

    May 30, 2015 at 7:49 PM

    Hi! I seem to have a problem with the little green worms eating my squash and cucumbers. This is our first year and all was appearing beautiful until we found tiny holes in our veggies….Please Help!

    Reply
  3. Jess

    April 10, 2015 at 2:25 PM

    Hello!
    How concentrated would you make the powdered Kelp for an insect repellent/infestation spray? Also, my local coop only had Sea Vegetable w/ Kelp mix. Underneath it had two long names (similar to probiotic names), just wondering if it’s still okay to use?
    Love your blog and you’re my “go to” for everything!!

    Reply
  4. Robin

    March 9, 2015 at 1:41 PM

    It’s rather cool that these have the double uses. I knew basil was a great spice for dishes, but had no idea it could repel mosquitoes! These tips will help out so much with my garden, thank you very much!

    Reply
  5. Rhonda

    February 2, 2015 at 5:05 AM

    Do you have an idea how I can get rid of the big white grubs in the soil in my containers without using chemicals? I live in the SE corner of Az. where we have soil unfit to plant in, so I grow everything in pots, planters and tubs. We just had over 1.40″ of rainfall in 2 days and I found 2 grubs floating in my onion planter today when I went out to plant my Shallots. I had left the bottom plug in the onion planter to really get the dried out soil wet, not realizing we were going to get that much rain. Glad I did now as I know about the grubs. I dread emptying all of them out and going through by hand picking them out, which I have done in the past. Don’t think my back could take it now. Plus I do have other health issues with disabilities these days to consider. I do love playing in the dirt (planting) trying new veggies and flowers. I keep at it when I have had to give up most of my other hobbies! Any suggestions would be greatly appreciated!
    Thank You. Rhonda

    Reply
    • Ann

      March 17, 2015 at 6:18 AM

      Beneficial nematodes should be available at your local garden nursery. I used these alongside organic Milky Spore (I purchased from Amazon) to remedy my grub issues. The beneficial nematodes solved the grub issue for the short-term and the Milky Spore was the long-term solution.

      Reply
  6. kenneth

    November 3, 2014 at 9:03 AM

    how do i apply the chemical on the plants against the worms, do i apply them on the plant directif the plant already out of the soil or on the soil even if the plant has grown?

    The document provided with the medicine doesnt show if its direct or not direct.

    Reply
  7. lorraine

    August 24, 2014 at 7:34 AM

    Hi, I have planted mint plants among my spinach, and regularly rub some mint leaves onto my hands and transfer aroma to the spinach plants works fantastically. Bearing in mind I have a tiny patch!
    Do you perhaps have a recipe for a non poisonous outdoor fly trap? They drive me insane!
    Thanks muchly appreciated as always.

    Reply
    • edith roberts

      June 19, 2015 at 9:04 PM

      put shinny pennies in a quart bag ; fill bag 1/2 full ;seal; hang up any where u need these ; we did this in a park under the shed and no bugs

      Reply
  8. Suzanne

    April 12, 2014 at 1:47 PM

    I noticed on my pepper plant leaves are turning white. I have put oragnic spikes in for fertilizer but I do not know what to use to keep the pests from my pepper plants.

    Reply
    • LaraS

      July 12, 2016 at 3:08 AM

      Maybe that’s mildew. Try a solution of baking soda.

      Reply
  9. Bob

    March 11, 2014 at 11:27 PM

    I love the companion planting part. I love herbs so planting them can really be doubly beneficial considering their health benefits and pest control qualities. Thanks.

    Reply
  10. Jen

    November 14, 2013 at 8:05 AM

    Great list! Maybe, just maybe, it will be the kick in the pants I need to finally put my fall starter plants in the ground. The warm Texas climate will hopefully compensate for my very late start this season! 🙁

    Reply
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