Garden / June 19, 2018 /
Keyhole gardens are designed to maximize space by eliminating the need for walkways as found in traditional row gardening or with raised beds. The design is also intended to be draught-resistant and deliver nutrients via compost throughout the entire growing season. Keyhole gardens are a raised style bed that take the rough shape of a circle with a keyhole shaped path allowing access to the entire garden. In the center of the circle is a vertical tunnel that houses many layers of compost. As the compost breaks down it delivers nutrients and moisture directly to the bed. Certainly an efficient way to grow, keyhole gardens can be constructed with many different materials as a quick Google search of the term will confirm. If you have space for a circle roughly 8 - 10 feet in diameter you can use whatever appropriate materials that are easily accessible corrugated siding, cedar posts, landscaping rock, bricks or any combination thereof. We have a page dedicated to keyhole gardens for more details.
The ideal soil type for growing most crops is loam, the rich halfway point between clay and sandy soils. If you are not sure which soil type you have, hold some in the palm of your hand, wet it and try to make a ball. If it forms a tight, hard wad, then you have lots of clay in your soil. If you can not form a ball, you have sand. If the ball forms but pretty easily breaks apart, you probably have loam. No matter which type you have, you can improve both your soils structure and fertility by working compost into the top layer each year. Those with really limited space can take heart in knowing there are effective composting options suitable for even the smallest of spaces.