Agriculture Reference
In-Depth Information
SFG Raised Bed:
Square foot Gardening is similar in many ways to Raised Bed Gardening, in fact it could be
argued that they are both versions of the same concept inasmuch as they are both 'raised'
to some extent or other. If you would like to know more about the two concepts 'side by
side' as it were, then please check out my topic on the subject '
Square Foot Gardening Vs
Raised Bed Gardening.
'
Without going into the all different workings of the two systems however, suffice it to say
that many of the methods for growing vegetables is exactly the same; and the particular as-
pect of the Raised Bed method - the fact that it is traditionally raised to 18-24 inches high -
is something that the SF gardener can also utilize to great advantage.
By raising the sides to a higher level, it means that not only is it more convenient to service
the plot as there is not so much bending over; but it is also easier to keep insect and vermin
free.
One simple method for keeping Carrot fly at bay for instance is to make sure you surround
your bed with a small screen (fleece will do) about 24 inches from the ground, as the carrot
fly does not fly above this height as a general rule. Depending on the height of your Raised
Bed then this might only involve a screen 6” high - easily attached to the side of your Bed.
As for the construction itself, simply calculate the materials to suit your desired height. For
instance a 4 x 4 SFG at 18” high instead of the example at 6” will need in the way of mater-
ials..
• 6 lengths of 6 inches x 1.5” x 4 foot
• 6 lengths 6 inches x 1.5” x 4 foot 3 inches
• 4 short posts 3 x 3 x 24”
• Galvanised nails or screw-nails to secure timber to posts.
• 6 lengths thin strapping or roll of baling twine to mark out the boxes.
There is of course a downside to a deeper bed - more materials not only in the construction,
but also more compost needed to fill it. However I would add that if you just intend to plant
vegetables such as brassicas, beets etc that do not require deep soil; then all you need do is
besurethatyouhaveabout6-8inchesofgoodcompostonthesurface,andfilltherestwith
any bricks or rubble that you can get for free - thereby saving money on expensive com-
posting material.
