Some are beautifully flat and easy to work with, others can be placed on a sloped surface that runs either up or down. Leave extra height on these parts if you want to build higher sides to the bed. You can place the board you want to cut directly onto the box while you cut it. Put the box on the floor.
The cut, as you can see below, does not have to be perfect, because it is placed along the floor.
Do garden beds have to be level?
This increased height allows you to sit on the edge of your bed while working in your garden (especially if it's made of wood or mortar rock) so you don't have to bend down and squat. They allow you to achieve a level ground for your garden without making major changes to your property. Give each bed some space — Every garden with raised beds can be different from the next, especially if you customize it yourself. One of the most important things you can do to ensure success is that the conditions for a blooming garden are in place before you start.
As a result, some of the bed sides need to be tapered to match the floor contour, making carpentry a bit more complex.
Do you need to anchor a raised bed?
Building individual raised beds to accommodate most of your soil avoids the erosion problems that come with patio gardens. The newer types of pressure treated wood are supposedly better, but I've decided to play it safe and just use cedar wood. Gentler weeds can usually be kept at bay with a layer of cardboard on the bottom of your raised bed if that's what you prefer. You will need to anchor the box before filling and planting so that the anchors are firmly fixed inside the raised bed.
It makes many things easier when gardening in the raised bed and can also save you a considerable amount of money.