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Onions have shallow roots

So, you’re going to try out companion gardening and try interplanting fruits and veggies with flowers and herbs. Keep in mind that specimens planted near each other should have different types of root systems, such as shallow rooted, medium rooted or deep rooted, so they won’t compete directly with each other.

Shallow-Rooted Plants

  • Corn
  • Broccoli
  • Spinach
  • Cabbage
  • Lettuce
  • Kale
  • Chard
  • Onions
  • Flowering annuals (the majority of them)

Medium-Rooted Plants

  • Cucumbers
  • Turnips
  • Beans
  • Summer squash
  • Carrots
  • Peas
  • Flowering perennials (a good portion of them)

Deep-Rooted Plants

  • Tomatoes
  • Asparagus
  • Winter squash
  • Pumpkins
  • Parsnips
Article From: Farm Flavor -

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  1. Goldi says:

    What about chard and kale? How are their roots classified?

    • Jessy Yancey says:

      Chard and kale also have shallow roots, just like their cousins lettuce and spinach. Thanks for the question – we’ve added it to our list above.

      Jessy Yancey
      editor, Farm Flavor

  2. Tom says:

    What about peppers (jalepano) and beets and red radishes? Will they work in a 3-4 inch shallow bed?

    • Jessy Yancey says:

      I have a pretty shallow (5-6 inches) raised bed and have successfully grown radishes and peppers. I think beets would be all right as well.

  3. Ace Diamond says:

    The summers in this area are HOT! I have a small garden with mostly herbs (oregano,mint,bail,thyme,parsley,tarragon,dill & sage). Also a tomato a couple aubergine (one an Ichiban),Sweiss chard,beets. Lavender & Zinnias. Rapid evaporation is a problem so I water in evenings. Should I irrigate (i.e. soak) or sprinkle each evening & assume that will suffice. Water consrvation is also necessary here, that’s why I ask. Thanks.

    • Jessy Yancey says:

      Hi Ace,

      Yes, watering at dawn or dusk will help to ensure that your veggies get saturated and the water doesn’t immediately evaporate. Hope this helps!

      Jessy Yancey
      Farm Flavor

  4. Monica says:

    Are Artichokes deep root plants like Asparagus?


  5. Sheree Bodreau says:

    Thank you for the information about root depth of plants. But I would like to know more: Potatoes, Collard, Chives, Strawberries, Peppers, beets etc. I would appreciate any information you have on at least these items.

    Sheree Bodreau

  6. george badenhorst says:

    thanks where can i learn more from other plant roots