Products > Garden Systems > How to Build a Planter Box

How to Build a Planter Box

Planter boxes can be used in many situations, but mainly to house small plants and shrubs around your garden. You can leave the plants in their pots or place them directly into soil in the planter box. We have listed below our suggestions for making planter boxes. You can use other methods if you wish (due to the versatility of the product), but this is a simple, easy to make unit that can be moved around your garden if required.
1.
Determine the size of the planter box you wish to make (try to make your planter box work to full garden edge bricks. When ordering the bricks, measure the length of your planter box (along all four sides) and divide this distance (must be in metres), by 0.115. This will tell you the number of bricks you require. For example, a planter box measuring 6.7 metres around the box will give you 58.3 bricks. You would order approximately 60 bricks.
2.
You will need a sheet of 12mm ply for the bottom and 100mm x 50mm treated pine for the sides. The size required depends on the size of the planter box.
3.
Cut the sheet of ply so that 30mm of the brick will sit on the edge of the ply.
4.
Draw a line 30mm from the edge of the ply. This will be the inside edge of your garden brick.
5.
Measure and cut your timber so that it will fit along the inside of the line.
6.
Nail and screw the timber together and then screw the ply to the timber, making sure that the timber sits on the line.
7.
Sit the pavers in position ready for gluing. We suggest you use Silastic 732, as it is readily available from any hardware store, but another type of glue may be suitable. If everything is right, remove bricks.
8.
8) Run silastic along the ply and the outside face of the timber. Re-position the bricks against the timber and on the ply. To help spread the glue, move the brick around slightly before setting into its final position. Leave to dry for 24 hours.
9.
Mark and cut out some holes for drainage in the ply. If you are putting soil into the planter box, you may need to use a filter fabric to prevent soil from falling out of the holes. You could staple some layers of old stockings over the holes - this will allow water to drain out, but keep the soil in.
10.
Using left over ply, screw some pieces to the underneath side of the box to raise it slightly off the ground. This will help with drainage underneath the box.
11.
Before putting soil or pots into the planter box, totally seal all timber, ply and bricks with a mixture of 1 part bondcrete and 5 parts water. Put on at least 2 coats, allowing each one to dry before applying the next coat.
 
  Click here to find out how to lay a garden edge

 


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