Companion Planting for Pest Protection. Does It Work Or ?

If you're looking for companion planting information, you've landed on the right page. The information below has been gleaned from many antique books in my collection and from old copies of way too many magazines to even begin to list.

I do not vouch for any or all of these bits of garden pest protection lore but pass them along to you to try. I do know many gardeners who swear by any and all of these companion planting techniques to protect your garden from pest problems. To be honest, I no longer use many of these techniques myself.

Please understand the effects of each of these garden pest protection plants is very localized (i.e. small area) so if you want to stop ants for example from putting aphids on a tree, you'll have to surround the tree with petunias. A petunia located a few yards away is ineffective.

A bit of pennyroyal in one part of the garden will not deter pests from entering another. Chives in the herb garden may protect those plants next door but not a yard away. The companion plants have to be companions – kissing cousins so to speak - to be effective.

For Garden Pest Protection- then plant:

  • Ants (carrying aphids) then plant pennyroyal, spearmint, southernwood, tansy,
  • Aphids plant pennyroyal, spearmint, southernwood, tansy, garlic, chives, coriander, anise, nasturtiums and petunias.
  • Asparagus beetles apparently do not like tomatoes
  • Borers dislike garlic, tansy, and onion
  • Cabbage maggots are stopped if you plant alternating rows of mint, tomato, rosemary, sage.
  • Cabbage moths apparently do not like mint, hyssop, rosemary, southernwood, thyme, sage, wormwood, celery, catnip and nasturtiums.
  • Carrot Fly dislikes rosemary, sage, wormwood, salsify, onions, coriander
  • Chinch bugs don't like soy beans so surround your lawn with them. Right.
  • Colorado Potato Beetle doesn't like green beans (me neither), horseradish, dead nettle and flax.
  • Cucumber Beetle is repelled by radish and tansy
  • Cutworms are driven to distraction by tansy
  • Eelworms are repelled by big stinky marigolds
  • Flea beetle wormwood, mint, catnip, tomatoes
  • Fruit tree moths of all sorts don't like southernwood
  • Groundhogs castor beans and human urine although the latter is enhanced by imbibing products made from hops
  • Japanese Beetles garlic, larkspur/delphiniums, tansy, rue, geraniums
  • Leafhopper petunias and geraniums
  • Mexican bean beetle marigold, potatoes, rosemary, summer savory, and petunias
  • Mice don't like mint (mice hate fresh breath)
  • Mites are repelled by onion, garlic and chives
  • Moles don't like spurge, castor plants and castor oil, fritillaria bulbs
  • Nematodes stinky marigolds, salvia, dahlia, calendula, asparagus
  • Plum curculio are supposedly repelled by garlic – don't ask me how you get it into the tree but I've read this more than once. (maybe all copying from one source)
  • Rabbits don't like onions or the onion family (garlic/chives etc)
  • Rose chafer geraniums, petunia and onion family
  • Slugs don't like rosemary, wormwood and that might be the only two plants they wont' eat
  • Squash bug don't like tansy and nasturtiums
  • Pumpkin beetle doesn't like nasturtiums (and nasturtiums don't like it either)
  • Tomato hornworm is deterred by borage, marigolds and basil.
  • White fly won't go near nasturtiums, marigolds, nicandra
  • Wireworms apparently don't like mustard and buckwheat.

  • My Take On Companion Planting

    Companion planting is a mixed bag of garden information with some gardeners and research saying there are effects from these techniques and others equally adamant that there are few if any measurable effects other than wishful thinking.

    I'm not going to make any claims here on these pages. I will give you the information that I've used or that friends of mine have used over the years. You can decide if you want to use these systems and you can make the decision about how effective they are for you.

    My own sense of it is that sometimes- depending on garden conditions and pest pressures- that companion planting will have an effect. However, when the hordes of locusts or Japanese beetles come out of the sky, planting a marigold next to a tomato isn't going to help much under this level of problem.

    But the interesting thing is that it doesn't cost anything other than a bit of research and seed to enter into this fascinating world. It may cost you a bit of time to set up your garden for companion planting but in doing so, you have the chance of healthier plants, fewer problems and a great deal of satisfaction that you've done something beneficial for yourself, your family and your neighbors

    Click Here For Companion Planting For Vegetable Gardening Ebook Details

    But Having Said That

    There are "companion planting" tips that do work and are backed by research. Some of these include trap-cropping (using plants that pests prefer to attract them away from the desirable crop) and plant timing (putting plants in the ground a week or two later or earlier to avoid pest hatching times)

    I've listed these in my book below - and will be adding them to these pages over the next while.

    Click Here For Companion Planting For Vegetable Gardening Ebook Details

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