Using Low Soil Mix For Vegetable Container Garden


I'm 23 year old male from the UK and starting to grow a patio vegetable garden for the first time. I was reading one of your comments about using soilless mix or low soil mix, what do u mean by that? Is it similar to our peat free compost? If not, is it ok to use peat in a vegetable garden if your using containers?


Bigglesaquatics from Bolton, Great Britain


Hi Bigglesaquatics,

An ideal growing medium for containers is usually referred to as soil-less, because it does not actually contain any soil. Regular soil is heavy. When used in containers, it can trap water and prevent air from reaching a plant's roots. It also makes containers hard to lift. A loose, porous growing medium allows water and food to move quickly to a plant's roots. It is also lighter, which makes it easier to move containers around the garden.

In North America, many soil-less mixes are sold in garden centers and nurseries as "container mix" or "premium potting mix". Many gardeners prefer to make their own container mix so they can customize it according to the needs of specific plants.

There are many container mix recipes floating around out there. Nearly all of them consist of a blend of peat moss, vermiculite or perlite, well-rotted manure or compost, and sand. Some mixes also contain sulfur (to lower the pH) or lime (to raise it). Others contain some type of slow release organic fertilizer.


Here is a basic recipe:

  • 2-1/2 gallons peat moss
  • 2-1/2 gallons vermiculite/perlite
  • 1-1/4 gallons of screened compost or well-rotted manure
  • 2 cups of fine sand

Container plants need to be fertilized regularly because nutrients leach out of the pots every time you water. Use a water-soluble fertilizer every two weeks or add two cups of a pelleted slow-release organic fertilizer to your soil-less mixture.

Good luck with your new garden!


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April 9, 20080 found this helpful

Dear B,

Go to HGTV: ... article/0,,HGTV_3635_1380307,00.html

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April 10, 20080 found this helpful

Peat is absolutely ok for soil mix. Most commercial soil mixes are made up of peat and many nurseries use a 70/30 peat/perlite mix. Peat is acidic, however, and most veggies like it a little alkaline so add some veggie fertilizer which will usually have some calcium in some form. Good luck! Tomatoes need a LARGE pot because they have extensive roots. I always grew cherry tomatoes when I had only a patio to work with. Also look for hanging tomato baskets at your local garden centre.

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