Welcome to Charlotte and Yours Frugally on Bloglovin and Tom on the sidebar
I notice that many people use the "deep bed" way to grow their veg.
The principle behind deep beds is that the soil is deep and humous-full and that the beds are just wide enough to allow you to tend to the plants while not standing on the soil, as compressing the soil damages the it' friability and drainage. This method means that a higher density of plants can be grown in a given area.
To set the ground up for this method it is usual to make a frame from strong treated wood (often old railway sleepers) these boxes are usually placed 3 to 4 foot apart and some sort of path made between the beds. (gravel, slabs, chippings) The boxes are then filled with compost and /or soil, ensuring a soil high in nutrients.
You may remember from pics that I have shared that I don't use this method. I have to say that I am not convinced it is the most efficient or frugal way to grow veg. Oooo er controversial Gill!!
Firstly, the outlay to set up this system is pretty high. If you are growing your own to save money it will be some considerable time before you get your money back (especially if you grow crops such as carrots and potatoes) Consider the cost of the wood, preservative,paving and compost, (though some people do have access to enough improved soil)
Secondly, you can make your soil as rich, deep and productive without using boxed deep beds.
Thirdly, you will grow easily as much per square foot in a well planned "conventional" garden.
Here's how we do it.
We ridge up the garden into 4 to 5 foot beds beds with and 18" gap between, this frees up more gardening space per metre than using the boxed garden, wide path method. I usually lay old floor boards or pallet wood in the gap to walk on or push wheel barrows along.(If you roll these boards over occasionally you can pick off and dispose of the slugs that will gather there - they have to gather somewhere!)
I will grant you that raised beds are tidier and if you are a wheelchair user higher raised beds make gardening possible for you (you will need higher boards for this, say 3 or 4 sleepers deep) I personally favour the chaotic flowers, fruit and vegetables (and quite a few weeds) look, which makes my heart sing in mid summer and have searched out a couple of pics to remind you.
Now some may have to lie down in a darkened room after looking at this organised chaos, but I reckon that the yield from this chaos is pretty good!
Some come on gardeners what do you think? (Head above the parapet here)