Re: Scientific Proof of Companion Planting

**c*@mail.com**

A couple of years ago when preparing a new talk, I hunted for controlled studies for some of the most common companion planting recommendations, such as plant marigolds to keep bugs out of the veggie garden, or plant garlic around roses to keep Japanese beetles away, etc.  I could not find any controlled studies that were replicated twice or more, that proved that the companion planting myths were true. Lots of "I planted it this way and the plants did well/didn't do well so I know it works," type of thing.  

And by the way, because of space constraints I planted beans in between my onions two years ago (close quarters! ) and they did just fine. Which shows the problem with companion planting stories... the location, type of beans/onions/whatever, soil, season, drainage, fertility (and yes, Jeff, microbes) and more all come into play. 

We continue to plant marigolds in our veggie gardens because my husband says, "It's traditional." But when I speak about such things it's in my myth-busting talk only, and my audiences appreciate hearing how this marigold myth got started. 
all the best,
C.L. 

www.gardenlady.com
blog www.wholelifegardening.com
"Looking for relaxation and inspiration? It's all in your own backyard"

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