Everyone has space for planter boxes on their patio.
If you have already built your picnic table from a reputable picnic table plan you could very easily construct many planter boxes.
You may even have some treated lumber left over from another outdoor project.
Planter boxes come in all sorts of shapes and sizes.
This is a simple one that will go with any setting.
You will require 104" (9") of pressure treated 8" * 3/4" pine lumber.
Sides 8*3/4" 2 @ 27 1/2" Ends 8*3/4" 2 @ 10" Bottom 8*3/4" 1 @ 24 1/4" Supports 8*3/4" 2 @ 2" Cut out all of the pieces square.
The bottom piece is correct.
Now measure the bottom of the sides to 24 1/4", leaving the same amount at each end.
Draw a line from the top to the bottom and saw the diagonals off so that each end of the sides are the same.
This creates an angled end.
(The top of the sides is 27 1/2 and the bottom is 24 1/4.
) Now do the same with the ends.
The top is 10" but the bottom is 6 3/4".
Half the difference, draw the line and cut the diagonals.
The box should fit together except for the bottom of the sides which will need a little planing to make them fit onto the bottom.
When it all fits, nail together with galvanised or stainless nails.
Nail the 2 bottom supports underneath so that the box doesn't sit directly on the deck.
Bore 4 - 5 1/2' holes through the bottom to allow an excess of water to flow out.
The Planter box is complete.
Just add soil and plants to enhance the look on your deck.