If you like this particular design and want to learn how to make the curved wire baskets, see the end of this post for videos and wire basket suppliers for Gabion Herb Spirals. These are some basic instructions to make a gabion wall or visit BlondeMafia or Garden Drum. More instructional videos for gabions can be found here and here. Read on for the tutorial steps
Cardboard (without ink or tape), weed mat or gravel. These are optional but useful for killing weeds if you build your coil right on top of the lawn. (I avoid carpet because it has likely been treated with chemicals that leach into the soil as it decomposes). Alternatively, you may need a drill for drainage holes if you are building on concrete.
Long effort. Attach a 1m (3ft) string to the stake and tie the other end with a light stake, bamboo stick or chalk. Use this to draw a line on the ground to measure the circle.
Organic material such as mushroom compost, worm castings, alfalfa, coconut peat or coconut husks, compost, straw and garden soil. These help build fertility to feed your garden for the long term. The quantity depends on the diameter of your spiral.
Compost (to plant your herbs in). Preferably homemade so it is full of living microorganisms or alternatively a compost.
Rock minerals and organic fertilizer (to add nutrients to your soil).
Mulch (whatever you have available) e.g. lucerne/alfalfa, sugarcane, baled grassy hay, pea straw, grass clippings, leaves, etc.
Herb plants; laurel trees and vegetable plants when planting.
pond material and irrigation fittings if inclusive.
Orient your pond or bottom of the spiral on the south side in the southern hemisphere and the north side in the northern hemisphere. When it comes to planting, this allows you to place your plants according to their needs for sun, shade and water.
Have someone hold or drive the stake into the central point of the ground where you want to place your herb spiral. To determine the circumference, stretch the string attached to the center pole to mark your circle. Draw a line in the soil with the other stake or bamboo stick tied to the end of it. Or use chalk if you are marking a hard surface.
Measuring out a herbal spiral | Micro Gardener2K+Save
An alternative method of marking out your IUD.
If you start on the lawn, you need to stop weeds from growing. Cardboard can be used for this purpose to cover compost material. Build the spiral on top. No light = no weed! Some use newspapers or thick phone books instead. I choose to avoid adding anything to my organic garden with inks that may be based on genetically modified soybeans.
The cardboard edges must overlap well to block all light. Soak cardboard well with a hose or dunk in a wheelbarrow until very wet. This prevents it from blowing away and speeds up decomposition.
Cardboard is readily available for free from most companies that pay to have it removed and recycled. You can tread a little lighter on the planet at the same time!
Lay your weed mat or wet cardboard to cover the circle you’ve marked. Cardboard will break down and add carbon to your soil. It provides a food source for microorganisms. You can also choose to add some organic material below this to speed up the decomposition of the cardboard. for example chopped vegetable scraps and other green waste from your garden.